ERDDAP > info > bcodmo_dataset_739098

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	[CTD - AT37-12] - CTD data from 9 casts at the oxygen-deficient zone of the Eastern Tropical North Pacific (ETNP), RV/Atlantis cruise AT37-12, April-May 2017 (Collaborative Research: Environmental Drivers of Chemoautotrophic Carbon Production at Deep-Sea Hydrothermal Vents - Comparative Roles of Oxygen and Nitrate)		F   I   M	background			BCO-DMO	bcodmo_dataset_739098

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	access_formats	String	.htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson
attribute	NC_GLOBAL	acquisition_description	String	Header information from Sea-Bird SBE 9 data files (sample from cast 1): * Sea-Bird SBE 9 Data File: * FileName = C:\\\data\\\ctd\\\at3712001.hdr * Software Version Seasave V 7.23.2 * Temperature SN = 4303 * Conductivity SN = 3009 * Number of Bytes Per Scan = 40 * Number of Voltage Words = 5 * Number of Scans Averaged by the Deck Unit = 1 * System UpLoad Time = Apr 25 2017 14:19:16 * NMEA Latitude = 14 01.97 N * NMEA Longitude = 104 20.66 W * NMEA UTC (Time) = Apr 25 2017 14:19:00 * Store Lat/Lon Data = Append to Every Scan * System UTC = Apr 25 2017 14:19:16 # nquan = 26 # nvalues = 3003 # units = specified # name 0 = timeS: Time, Elapsed [seconds] # name 1 = longitude: Longitude [deg] # name 2 = latitude: Latitude [deg] # name 3 = prDM: Pressure, Digiquartz [db] # name 4 = t090C: Temperature [ITS-90, deg C] # name 5 = t190C: Temperature, 2 [ITS-90, deg C] # name 6 = c0S/m: Conductivity [S/m] # name 7 = c1S/m: Conductivity, 2 [S/m] # name 8 = CStarTr0: Beam Transmission, WET Labs C-Star [%] # name 9 = flECO-AFL: Fluorescence, WET Labs ECO-AFL/FL [mg/m^3] # name 10 = turbWETntu0: Turbidity, WET Labs ECO [NTU] # name 11 = sbeox0V: Oxygen raw, SBE 43 [V] # name 12 = altM: Altimeter [m] # name 13 = nbf: Bottles Fired # name 14 = spar: SPAR/Surface Irradiance # name 15 = T2-T190C: Temperature Difference, 2 - 1 [ITS-90, deg C] # name 16 = depSM: Depth [salt water, m], lat = 14.0328 # name 17 = density00: Density [density, kg/m^3] # name 18 = density11: Density, 2 [density, kg/m^3] # name 19 = sal00: Salinity, Practical [PSU] # name 20 = sal11: Salinity, Practical, 2 [PSU] # name 21 = svCM: Sound Velocity [Chen-Millero, m/s] # name 22 = svCM1: Sound Velocity, 2 [Chen-Millero, m/s] # name 23 = sbeox0Mm/L: Oxygen, SBE 43 [umol/l], WS = 2 # name 24 = dz/dtM: Descent Rate [m/s], WS = 2 # name 25 = flag: flag # span 0 = 10.777, 6384.982 # span 1 = -104.34815, -104.34439 # span 2 = 14.02820, 14.03274 # span 3 = 2.012, 1517.275 # span 4 = 3.0261, 29.5506 # span 5 = 3.0246, 29.5499 # span 6 = 3.203151, 5.633423 # span 7 = 3.202059, 5.631726 # span 8 = 97.9989, 100.2511 # span 9 = -0.0468, 1.1713 # span 10 = -0.1532, -0.1508 # span 11 = 0.5349, 2.6302 # span 12 = 19.15, 103.34 # span 13 = 0, 23 # span 14 = 3.2622e+00, 6.3235e+00 # span 15 = -0.5208, 0.1394 # span 16 = 2.000, 1503.000 # span 17 = 1021.1002, 1034.5674 # span 18 = 1021.0921, 1034.5583 # span 19 = 33.7034, 34.8581 # span 20 = 33.6949, 34.8381 # span 21 = 1485.17, 1543.87 # span 22 = 1485.17, 1543.86 # span 23 = 0.417, 206.650 # span 24 = -1.760, 1.703 # span 25 = 0.0000e+00, 0.0000e+00 # interval = meters: 1 # start_time = Apr 25 2017 14:19:00 [NMEA time, header] # bad_flag = -9.990e-29 # <Sensors count="15" > # <sensor Channel="1" > # <!-- Frequency 0, Temperature --> # <TemperatureSensor SensorID="55" > # <SerialNumber>4303</SerialNumber> # <CalibrationDate>20-Jan-16</CalibrationDate> # <UseG_J>1</UseG_J> # <A>0.00000000e+000</A> # <B>0.00000000e+000</B> # <C>0.00000000e+000</C> # <D>0.00000000e+000</D> # <F0_Old>0.000</F0_Old> # <G>4.38501054e-003</G> # <H>6.47529902e-004</H> # <I>2.19462935e-005</I> # <J>1.64955605e-006</J> # <F0>1000.000</F0> # <Slope>1.00000000</Slope> # <Offset>0.0000</Offset> # </TemperatureSensor> # </sensor> # <sensor Channel="2" > # <!-- Frequency 1, Conductivity --> # <ConductivitySensor SensorID="3" > # <SerialNumber>3009</SerialNumber> # <CalibrationDate>20-Jan-16</CalibrationDate> # <UseG_J>1</UseG_J> # <!-- Cell const and series R are applicable only for wide range sensors. --> # <SeriesR>0.0000</SeriesR> # <CellConst>2000.0000</CellConst> # <ConductivityType>0</ConductivityType> # <Coefficients equation="0" > # <A>0.00000000e+000</A> # <B>0.00000000e+000</B> # <C>0.00000000e+000</C> # <D>0.00000000e+000</D> # <M>0.0</M> # <CPcor>-9.57000000e-008</CPcor> # </Coefficients> # <Coefficients equation="1" > # <G>-1.04864981e+001</G> # <H>1.48778269e+000</H> # <I>3.67673536e-004</I> # <J>5.06417242e-005</J> # <CPcor>-9.57000000e-008</CPcor> # <CTcor>3.2500e-006</CTcor> # <!-- WBOTC not applicable unless ConductivityType = 1. --> # <WBOTC>0.00000000e+000</WBOTC> # </Coefficients> # <Slope>1.00000000</Slope> # <Offset>0.00000</Offset> # </ConductivitySensor> # </sensor> # <sensor Channel="3" > # <!-- Frequency 2, Pressure, Digiquartz with TC --> # <PressureSensor SensorID="45" > # <SerialNumber>0749</SerialNumber> # <CalibrationDate>08-Apr-14</CalibrationDate> # <C1>-4.970438e+004</C1> # <C2>-4.005750e-001</C2> # <C3>1.365700e-002</C3> # <D1>3.669600e-002</D1> # <D2>0.000000e+000</D2> # <T1>3.027760e+001</T1> # <T2>-4.522040e-004</T2> # <T3>4.002070e-006</T3> # <T4>1.971140e-009</T4> # <Slope>0.99992397</Slope> # <Offset>-1.86008</Offset> # <T5>0.000000e+000</T5> # <AD590M>1.283700e-002</AD590M> # <AD590B>-8.706643e+000</AD590B> # </PressureSensor> # </sensor> # <sensor Channel="4" > # <!-- Frequency 3, Temperature, 2 --> # <TemperatureSensor SensorID="55" > # <SerialNumber>4360</SerialNumber> # <CalibrationDate>20-Jan-16</CalibrationDate> # <UseG_J>1</UseG_J> # <A>0.00000000e+000</A> # <B>0.00000000e+000</B> # <C>0.00000000e+000</C> # <D>0.00000000e+000</D> # <F0_Old>0.000</F0_Old> # <G>4.36265052e-003</G> # <H>6.49800036e-004</H> # <I>2.30621342e-005</I> # <J>1.84888934e-006</J> # <F0>1000.000</F0> # <Slope>1.00000000</Slope> # <Offset>0.0000</Offset> # </TemperatureSensor> # </sensor> # <sensor Channel="5" > # <!-- Frequency 4, Conductivity, 2 --> # <ConductivitySensor SensorID="3" > # <SerialNumber>2707</SerialNumber> # <CalibrationDate>20-Jan-16</CalibrationDate> # <UseG_J>1</UseG_J> # <!-- Cell const and series R are applicable only for wide range sensors. --> # <SeriesR>0.0000</SeriesR> # <CellConst>2000.0000</CellConst> # <ConductivityType>0</ConductivityType> # <Coefficients equation="0" > # <A>0.00000000e+000</A> # <B>0.00000000e+000</B> # <C>0.00000000e+000</C> # <D>0.00000000e+000</D> # <M>0.0</M> # <CPcor>-9.57000000e-008</CPcor> # </Coefficients> # <Coefficients equation="1" > # <G>-1.07265688e+001</G> # <H>1.55946953e+000</H> # <I>-1.31572164e-003</I> # <J>1.86775491e-004</J> # <CPcor>-9.57000000e-008</CPcor> # <CTcor>3.2500e-006</CTcor> # <!-- WBOTC not applicable unless ConductivityType = 1. --> # <WBOTC>0.00000000e+000</WBOTC> # </Coefficients> # <Slope>1.00000000</Slope> # <Offset>0.00000</Offset> # </ConductivitySensor> # </sensor> # <sensor Channel="6" > # <!-- A/D voltage 0, Oxygen, SBE 43 --> # <OxygenSensor SensorID="38" > # <SerialNumber>0072</SerialNumber> # <CalibrationDate>16-Jan-16</CalibrationDate> # <Use2007Equation>1</Use2007Equation> # <CalibrationCoefficients equation="0" > # <!-- Coefficients for Owens-Millard equation. --> # <Boc>0.0000</Boc> # <Soc>0.0000e+000</Soc> # <offset>0.0000</offset> # <Pcor>0.00e+000</Pcor> # <Tcor>0.0000</Tcor> # <Tau>0.0</Tau> # </CalibrationCoefficients> # <CalibrationCoefficients equation="1" > # <!-- Coefficients for Sea-Bird equation - SBE calibration in 2007 and later. --> # <Soc>4.8025e-001</Soc> # <offset>-0.5316</offset> # <A>-4.2594e-003</A> # <B> 2.1935e-004</B> # <C>-3.0959e-006</C> # <D0> 2.5826e+000</D0> # <D1> 1.92634e-004</D1> # <D2>-4.64803e-002</D2> # <E> 3.6000e-002</E> # <Tau20> 2.5000</Tau20> # <H1>-3.3000e-002</H1> # <H2> 5.0000e+003</H2> # <H3> 1.4500e+003</H3> # </CalibrationCoefficients> # </OxygenSensor> # </sensor> # <sensor Channel="7" > # <!-- A/D voltage 1, Free --> # </sensor> # <sensor Channel="8" > # <!-- A/D voltage 2, Free --> # </sensor> # <sensor Channel="9" > # <!-- A/D voltage 3, Transmissometer, WET Labs C-Star --> # <WET_LabsCStar SensorID="71" > # <SerialNumber>CST-1117</SerialNumber> # <CalibrationDate>20May15, Field 8Mar17</CalibrationDate> # <M>20.9850</M> # <B>-0.1538</B> # <PathLength>0.250</PathLength> # </WET_LabsCStar> # </sensor> # <sensor Channel="10" > # <!-- A/D voltage 4, Fluorometer, WET Labs ECO-AFL/FL --> # <FluoroWetlabECO_AFL_FL_Sensor SensorID="20" > # <SerialNumber>FLTURT-1013</SerialNumber> # <CalibrationDate>2014-April-25</CalibrationDate> # <ScaleFactor>6.00000000e+000</ScaleFactor> # <!-- Dark output --> # <Vblank>0.0870</Vblank> # </FluoroWetlabECO_AFL_FL_Sensor> # </sensor> # <sensor Channel="11" > # <!-- A/D voltage 5, Turbidity Meter, WET Labs, ECO-NTU --> # <TurbidityMeter SensorID="67" > # <SerialNumber>FLTURT-1013</SerialNumber> # <CalibrationDate>2014 April 25</CalibrationDate> # <ScaleFactor>0.080000</ScaleFactor> # <!-- Dark output --> # <DarkVoltage>2.000000</DarkVoltage> # </TurbidityMeter> # </sensor> # <sensor Channel="12" > # <!-- A/D voltage 6, Altimeter --> # <AltimeterSensor SensorID="0" > # <SerialNumber>PSA916-40852</SerialNumber> # <CalibrationDate></CalibrationDate> # <ScaleFactor>15.000</ScaleFactor> # <Offset>0.000</Offset> # </AltimeterSensor> # </sensor> # <sensor Channel="13" > # <!-- A/D voltage 7, Free --> # </sensor> # <sensor Channel="14" > # <!-- SPAR voltage, Unavailable --> # </sensor> # <sensor Channel="15" > # <!-- SPAR voltage, SPAR/Surface Irradiance --> # <SPAR_Sensor SensorID="51" > # <SerialNumber>16500</SerialNumber> # <CalibrationDate>March 28, 2013</CalibrationDate> # <ConversionFactor>1641.85000000</ConversionFactor> # <RatioMultiplier>1.00000000</RatioMultiplier> # </SPAR_Sensor> # </sensor> # </Sensors> # datcnv_date = Apr 25 2017 16:08:39, 7.23.2 [datcnv_vars = 16] # datcnv_in = c:\\\data\\\ctd\\\at3712001.hex c:\\\data\\\ctd\\\at3712001.XMLCON # datcnv_skipover = 0 # datcnv_ox_hysteresis_correction = yes # wildedit_date = Apr 25 2017 16:08:50, 7.23.2 # wildedit_in = c:\\\data\\\ctd\\\process\\\at3712001.cnv # wildedit_pass1_nstd = 2.0 # wildedit_pass2_nstd = 20.0 # wildedit_pass2_mindelta = 2.000e+000 # wildedit_npoint = 100 # wildedit_vars = longitude latitude prDM t090C t190C c0S/m c1S/m CStarTr0 flECO-AFL turbWETntu0 sbeox0V altM spar T2-T190C # wildedit_excl_bad_scans = yes # alignctd_date = Apr 25 2017 16:08:57, 7.23.2 # alignctd_in = c:\\\data\\\ctd\\\process\\\at3712001.cnv # alignctd_adv = c0S/m 0.073, c1S/m 0.073, sbeox0V 2.000 # celltm_date = Apr 25 2017 16:09:07, 7.23.2 # celltm_in = c:\\\data\\\ctd\\\process\\\at3712001.cnv # celltm_alpha = 0.0300, 0.0300 # celltm_tau = 7.0000, 7.0000 # celltm_temp_sensor_use_for_cond = primary, secondary # Derive_date = Apr 25 2017 16:09:13, 7.23.2 [derive_vars = 9] # Derive_in = c:\\\data\\\ctd\\\process\\\at3712001.cnv c:\\\data\\\ctd\\\process\\\at3712001.XMLCON # derive_time_window_docdt = seconds: 2 # derive_ox_tau_correction = no # derive_time_window_dzdt = seconds: 2 # binavg_date = Apr 25 2017 16:09:19, 7.23.2 # binavg_in = c:\\\data\\\ctd\\\process\\\at3712001.cnv # binavg_bintype = meters # binavg_binsize = 1 # binavg_excl_bad_scans = yes # binavg_skipover = 0 # binavg_surface_bin = no, min = 1.000, max = 0.000, value = 0.000 # file_type = ascii Further information on sensors: sensor_channel,parameter,sensor_id,serial_number,instrument,calibration_date 1,Temperature_1,55,4303,nd,2016-01-20 2,Conductivity_1,3,3009,nd,2016-01-20 3,Pressure,45,0749,Digiquartz_with_TC,2014-04-08 4,Temperature_2,55,4360,nd,2016-01-20 5,Conductivity_2,3,2707,nd,2016-01-20 6,Oxygen,38,0072,SBE_43,2016-01-16 7,free,,,, 8,free,,,, 9,Transmissometer,71,CST-1117,WET_LabsCStar,20-May-15;_8-Mar-17 10,Fluorometer,20,FLTURT-1013,WetlabECO_AFL_FL_Sensor,2014-04-25 11,Turbidity,67,FLTURT-1013,WET_Labs,_ECO-NTU,2014-04-25 12,Altimeter,0,PSA916-40852,nd, 13,free,,,, 14,SPAR,,,Unavailable, 15,SPAR/Surface_Irradiance,50,16500,,2013-03-28
attribute	NC_GLOBAL	awards_0_award_nid	String	685780
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1559042
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1559042
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_0_program_manager	String	Michael E. Sieracki
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	50446
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	CTD Data from Cruise R/V Atlantis 37-12 (AT37-12) PI: S. Sievert (WHOI), A. Babin (MIT) Version: 2018-06-21
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_email	String	info at bco-dmo.org
attribute	NC_GLOBAL	creator_name	String	BCO-DMO
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	date_created	String	2018-06-21T15:10:23Z
attribute	NC_GLOBAL	date_modified	String	2020-01-03T17:00:53Z
attribute	NC_GLOBAL	defaultDataQuery	String	&amp;time&lt;now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.739098.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-89.9996
attribute	NC_GLOBAL	geospatial_lat_max	double	14.03048
attribute	NC_GLOBAL	geospatial_lat_min	double	9.34142
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-89.9996
attribute	NC_GLOBAL	geospatial_lon_min	double	-104.3462
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	3238.0
attribute	NC_GLOBAL	geospatial_vertical_min	double	1.0
attribute	NC_GLOBAL	geospatial_vertical_positive	String	down
attribute	NC_GLOBAL	geospatial_vertical_units	String	m
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/739098
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	CTD
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	739107
attribute	NC_GLOBAL	instruments_0_description	String	The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column and permits scientists observe the physical properties in real time via a conducting cable connecting the CTD to a deck unit and computer on the ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast. This instrument designation is used when specific make and model are not known.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/130/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	CTD profiler
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	417
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Sea-Bird SBE 9
attribute	NC_GLOBAL	keywords	String	altimetry, altitude, atmosphere, bco, bco-dmo, biological, bottles, bottles_fired, chemical, cond, cond_2, data, dataset, date, density, density_2, depth, depth_bottom, descent, descent_rate, diff, dmo, earth, Earth Science > Atmosphere > Altitude > Station Height, elapsed, erddap, fired, flag, fluor, height, laboratory, lat_start, latitude, lon_start, longitude, management, O2, O2_v, oceanography, office, oxygen, preliminary, press, rate, sal, sal_2, satellite, science, sound, sound_vel, sound_vel_2, spar, start, station, temp_2, temp_diff, temperature, time, time_elapsed, time_start_UTC, trans, turbidity, v, vel
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/739098/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/739098
attribute	NC_GLOBAL	Northernmost_Northing	double	14.03048
attribute	NC_GLOBAL	param_mapping	String	{'739098': {'depth': 'flag - depth', 'lon_start': 'flag - longitude', 'lat_start': 'flag - latitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/739098/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	WHOI
attribute	NC_GLOBAL	people_0_person_name	String	Stefan M Sievert
attribute	NC_GLOBAL	people_0_person_nid	String	51416
attribute	NC_GLOBAL	people_0_role	String	Principal Investigator
attribute	NC_GLOBAL	people_0_role_type	String	originator
attribute	NC_GLOBAL	people_1_affiliation	String	Massachusetts Institute of Technology
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	MIT-EAPS
attribute	NC_GLOBAL	people_1_person_name	String	Andrew Babbin
attribute	NC_GLOBAL	people_1_person_nid	String	738016
attribute	NC_GLOBAL	people_1_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_1_role_type	String	originator
attribute	NC_GLOBAL	people_2_affiliation	String	Massachusetts Institute of Technology
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	MIT-EAPS
attribute	NC_GLOBAL	people_2_person_name	String	Andrew Babbin
attribute	NC_GLOBAL	people_2_person_nid	String	738016
attribute	NC_GLOBAL	people_2_role	String	Contact
attribute	NC_GLOBAL	people_2_role_type	String	related
attribute	NC_GLOBAL	people_3_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_3_person_name	String	Nancy Copley
attribute	NC_GLOBAL	people_3_person_nid	String	50396
attribute	NC_GLOBAL	people_3_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_3_role_type	String	related
attribute	NC_GLOBAL	project	String	vent O2 NO3 roles
attribute	NC_GLOBAL	projects_0_acronym	String	vent O2 NO3 roles
attribute	NC_GLOBAL	projects_0_description	String	NSF award abstract: Deep-sea hydrothermal vents, first discovered in 1977, are exemplary ecosystems where microbial chemosynthesis rather than photosynthesis is the primary source of organic carbon. Chemosynthetic microorganisms use the energy generated by oxidizing reduced inorganic chemicals contained in the vent fluids, like hydrogen sulfide or hydrogen gas, to convert carbon dioxide (CO2) into cell material. By doing so, they effectively transfer the energy from a geothermal source to higher trophic levels, in the process supporting the unique and fascinating ecosystems that are characterized by high productivity - oases in the otherwise barren deep ocean landscape. While the general view of the functioning of these ecosystems is established, there are still major gaps in our understanding of the microbiology and biogeochemistry of these systems. Particularly lacking are studies measuring rates of microbial activity in situ, which is ultimately needed to understand production of these ecosystems and to assess their impact on global biogeochemical cycles. This project makes use of the Vent-Submersible Incubation Device (Vent-SID), a robotic micro-laboratory that was recently developed and tested in the field. This instrument makes it possible for the first time to determine rates of carbon fixation at both in situ pressures and temperatures, revolutionizing the way we conduct microbial biogeochemical investigations at deep-sea hydrothermal vents. This is an interdisciplinary and collaborative effort between two US and foreign institutions, creating unique opportunities for networking and to foster international collaborations. This will also benefit two graduate students working in the project, who will get exposed to a wide range of instrumentation and scientific fields, facilitating their interdisciplinary education. In collaboration with Dr. Nitzan Resnick, academic dean of The Sage School, an elementary school outreach program will be developed and a long-term partnership with the school established. Further, a cruise blog site to disseminate the research to schools and the broader public will be set up. The results will be the topic of media coverage as well as be integrated into coursework and webpages existing either in the PI's labs or at the institution. This project is using a recently developed robotic micro-laboratory, the Vent-SID, to measure rates of chemoautotrophic production and to determine the relative importance of oxygen and nitrate in driving chemosynthesis at deep-sea hydrothermal vents at in situ pressures and temperatures and to tackle the following currently unresolved science objectives: 1) obtain in situ rates of chemoautotrophic carbon fixation, 2) obtain in situ nitrate reduction rate measurements, and 3) directly correlate the measurement of these processes with the expression of key genes involved in carbon and energy metabolism. Although recent data suggests that nitrate reduction either to N2 (denitrification) or to NH4+ (dissimilatory reduction of nitrate to ammonium) might be responsible for a significant fraction of chemoautotrophic production, NO3-reduction rates have never been measured in situ at hydrothermal vents. The researchers hypothesize that chemoautrophic growth is strongly coupled to nitrate respiration in vent microbial communities. During a cruise that will take place approximately 12 months into the project (~Feb 2017), the researchers will carry out a total of 4 deployments of the Vent-SID as well as ancillary sampling collection at the 9°46N to 9°53N segment of the East Pacific Rise. They will focus efforts on two diffuse-flow vent sites, "Crab Spa" and "Teddy Bear". "Crab Spa" is a diffuse flow vent site (T: 25°C) that has been used as a model system to gain insights into chemoautotrophic processes and has been frequently sampled over the last several years. This vent site has been very well characterized, both geochemically and microbiologically, providing excellent background data for the proposed process oriented studies. "Teddy Bear" is a diffuse-flow site that was discovered in Jan 2014, and it has a lower temperature (T: 12°C), making it a good comparative site. The researchers will perform a number of short duration time-course incubations to assess the role of different environmental parameters that have been identified as likely key variables (e.g., O2, temperature, NO3-), and to link these process rate measurements to the expression of functional genes using metatranscriptomic analyses. This study will be the first attempt to measure critical metabolic processes of hydrothermal vent microbial assemblages under critical in situ conditions and to assess the quantitative importance of electron donor and acceptor pathways in situ. In the future, it is envisioned that the Vent-SID will become a routine application by the oceanographic community for measuring time series rates of relevant metabolic processes at hydrothermal vents under in situ pressures and vent fluid temperatures.
attribute	NC_GLOBAL	projects_0_end_date	String	2019-04
attribute	NC_GLOBAL	projects_0_geolocation	String	Deep-Sea hydrothermal vent field at 9 deg N on the East Pacific Rise
attribute	NC_GLOBAL	projects_0_name	String	Collaborative Research: Environmental Drivers of Chemoautotrophic Carbon Production at Deep-Sea Hydrothermal Vents - Comparative Roles of Oxygen and Nitrate
attribute	NC_GLOBAL	projects_0_project_nid	String	685773
attribute	NC_GLOBAL	projects_0_start_date	String	2016-05
attribute	NC_GLOBAL	publisher_name	String	Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	9.34142
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	CTD data from Atlantis cruise AT37-12 in the Eastern Tropical North Pacific in April and May 2017. Data from 9 casts are included.
attribute	NC_GLOBAL	title	String	[CTD - AT37-12] - CTD data from 9 casts at the oxygen-deficient zone of the Eastern Tropical North Pacific (ETNP), RV/Atlantis cruise AT37-12, April-May 2017 (Collaborative Research: Environmental Drivers of Chemoautotrophic Carbon Production at Deep-Sea Hydrothermal Vents - Comparative Roles of Oxygen and Nitrate)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-104.3462
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	station		byte
attribute	station	_FillValue	byte	127
attribute	station	actual_range	byte	1, 10
attribute	station	bcodmo_name	String	station
attribute	station	description	String	station identifier
attribute	station	long_name	String	Station
attribute	station	units	String	unitless
variable	date_start_UTC		String
attribute	date_start_UTC	bcodmo_name	String	date
attribute	date_start_UTC	description	String	date [UTC] at start of cast formatted as yyyy-mm-dd
attribute	date_start_UTC	long_name	String	Date Start UTC
attribute	date_start_UTC	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	date_start_UTC	source_name	String	date_start_UTC
attribute	date_start_UTC	time_precision	String	1970-01-01
attribute	date_start_UTC	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	9.34142, 14.03048
attribute	latitude	axis	String	Y
attribute	latitude	bcodmo_name	String	lat_start
attribute	latitude	colorBarMaximum	double	90.0
attribute	latitude	colorBarMinimum	double	-90.0
attribute	latitude	description	String	cast start latitude; north is positive
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		double
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	_FillValue	double	NaN
attribute	longitude	actual_range	double	-104.3462, -89.9996
attribute	longitude	axis	String	X
attribute	longitude	bcodmo_name	String	lon_start
attribute	longitude	colorBarMaximum	double	180.0
attribute	longitude	colorBarMinimum	double	-180.0
attribute	longitude	description	String	cast start longitude; east is positive
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	depth_bottom		short
attribute	depth_bottom	_FillValue	short	32767
attribute	depth_bottom	actual_range	short	2512, 3740
attribute	depth_bottom	bcodmo_name	String	depth_w
attribute	depth_bottom	colorBarMaximum	double	8000.0
attribute	depth_bottom	colorBarMinimum	double	-8000.0
attribute	depth_bottom	colorBarPalette	String	TopographyDepth
attribute	depth_bottom	description	String	depth of water
attribute	depth_bottom	long_name	String	Depth
attribute	depth_bottom	standard_name	String	depth
attribute	depth_bottom	units	String	meters
variable	time_start_UTC		String
attribute	time_start_UTC	bcodmo_name	String	time_start
attribute	time_start_UTC	description	String	time [UTC] at start of cast formatted as HH:MM:SS
attribute	time_start_UTC	long_name	String	Time Start UTC
attribute	time_start_UTC	units	String	unitless
variable	time_elapsed		double
attribute	time_elapsed	_FillValue	double	NaN
attribute	time_elapsed	actual_range	double	-9.99E-29, 10968.605
attribute	time_elapsed	bcodmo_name	String	time_elapsed
attribute	time_elapsed	description	String	Number of seconds elapsed from the start of the cast. Originally named 'timeS'.
attribute	time_elapsed	long_name	String	Time Elapsed
attribute	time_elapsed	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ELTMZZZZ/
attribute	time_elapsed	units	String	seconds
variable	lon		double
attribute	lon	_FillValue	double	NaN
attribute	lon	actual_range	double	-104.34815, -9.99E-29
attribute	lon	bcodmo_name	String	latitude
attribute	lon	colorBarMaximum	double	180.0
attribute	lon	colorBarMinimum	double	-180.0
attribute	lon	description	String	latitude; north is positive. Originally named 'latitude'.
attribute	lon	long_name	String	Longitude
attribute	lon	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
attribute	lon	standard_name	String	longitude
attribute	lon	units	String	decimal degrees
variable	lat		float
attribute	lat	_FillValue	float	NaN
attribute	lat	actual_range	float	-9.99E-29, 14.03274
attribute	lat	bcodmo_name	String	longitude
attribute	lat	colorBarMaximum	double	90.0
attribute	lat	colorBarMinimum	double	-90.0
attribute	lat	description	String	longitude; east is positive. Originally named 'longitude'.
attribute	lat	long_name	String	Latitude
attribute	lat	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	lat	standard_name	String	latitude
attribute	lat	units	String	decimal degrees
variable	press		float
attribute	press	_FillValue	float	NaN
attribute	press	actual_range	float	-9.99E-29, 3281.7
attribute	press	bcodmo_name	String	pressure
attribute	press	description	String	Pressure. Originally named 'prDM'.
attribute	press	long_name	String	Press
attribute	press	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PRESPR01/
attribute	press	units	String	decibars
variable	temp		float
attribute	temp	_FillValue	float	NaN
attribute	temp	actual_range	float	-9.99E-29, 30.0737
attribute	temp	bcodmo_name	String	temperature
attribute	temp	description	String	Primary temperature measurement. Originally named 't090C'.
attribute	temp	long_name	String	Temperature
attribute	temp	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/
attribute	temp	units	String	degrees Celsius
variable	temp_2		float
attribute	temp_2	_FillValue	float	NaN
attribute	temp_2	actual_range	float	-9.99E-29, 30.0718
attribute	temp_2	bcodmo_name	String	temperature
attribute	temp_2	description	String	Secondary tempearture measurement. Originally named 't190C'.
attribute	temp_2	long_name	String	Temp 2
attribute	temp_2	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/
attribute	temp_2	units	String	degrees Celsius
variable	cond		float
attribute	cond	_FillValue	float	NaN
attribute	cond	actual_range	float	-9.99E-29, 5.684972
attribute	cond	bcodmo_name	String	conductivity
attribute	cond	description	String	Primary conductivity measurement. Originally named 'c0S/m'.
attribute	cond	long_name	String	Cond
attribute	cond	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/CNDC/
attribute	cond	units	String	Siemens/meter [S/m]
variable	cond_2		float
attribute	cond_2	_FillValue	float	NaN
attribute	cond_2	actual_range	float	-9.99E-29, 5.68213
attribute	cond_2	bcodmo_name	String	conductivity
attribute	cond_2	description	String	Secondary conductivity measurement. Originally named 'c1S/m'.
attribute	cond_2	long_name	String	Cond 2
attribute	cond_2	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/CNDC/
attribute	cond_2	units	String	Siemens/meter [S/m]
variable	trans		float
attribute	trans	_FillValue	float	NaN
attribute	trans	actual_range	float	-9.99E-29, 100.4446
attribute	trans	bcodmo_name	String	transmission
attribute	trans	description	String	Beam transmission expressed as percent. Originally named 'CStarTr0'.
attribute	trans	long_name	String	Trans
attribute	trans	units	String	unitless
variable	fluor		float
attribute	fluor	_FillValue	float	NaN
attribute	fluor	actual_range	float	-0.0662, 3.2573
attribute	fluor	bcodmo_name	String	fluorescence
attribute	fluor	description	String	Fluorescence measured by WET Labs ECO-AFL/FL in milligrams per cubic meter. Originally named 'flECO-AFL'.
attribute	fluor	long_name	String	Fluor
attribute	fluor	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/CPHLPM01/
attribute	fluor	units	String	milligrams/cubic meter [mg/m^3]
variable	turbidity		float
attribute	turbidity	_FillValue	float	NaN
attribute	turbidity	actual_range	float	-0.1533, -9.99E-29
attribute	turbidity	bcodmo_name	String	turbidity
attribute	turbidity	description	String	Turbidity measured by WET Labs ECO. Originally named 'turbWetntu0'.
attribute	turbidity	long_name	String	Turbidity
attribute	turbidity	units	String	NTU
variable	O2_v		float
attribute	O2_v	_FillValue	float	NaN
attribute	O2_v	actual_range	float	-9.99E-29, 2.7291
attribute	O2_v	bcodmo_name	String	O2_v
attribute	O2_v	description	String	Raw voltage from SBE43 oxygen sensor. Originally named 'Sbeox0V'.
attribute	O2_v	long_name	String	O2 V
attribute	O2_v	units	String	volts
variable	altitude_		float
attribute	altitude_	_FillValue	float	NaN
attribute	altitude_	actual_range	float	-7.4, 148.34
attribute	altitude_	bcodmo_name	String	altitude
attribute	altitude_	description	String	Altimeter reading. Originally named 'altM'.
attribute	altitude_	long_name	String	Altitude
attribute	altitude_	units	String	meters
variable	bottles_fired		float
attribute	bottles_fired	_FillValue	float	NaN
attribute	bottles_fired	actual_range	float	-9.99E-29, 24.0
attribute	bottles_fired	bcodmo_name	String	bottle
attribute	bottles_fired	description	String	Number of bottle fired. Originally named 'nbf'.
attribute	bottles_fired	long_name	String	Bottles Fired
attribute	bottles_fired	units	String	unitless
variable	SPAR		float
attribute	SPAR	_FillValue	float	NaN
attribute	SPAR	actual_range	float	-9.99E-29, 7.15
attribute	SPAR	bcodmo_name	String	SPAR
attribute	SPAR	description	String	SPAR/Surface Irradiance. Originally named 'spar'.
attribute	SPAR	long_name	String	SPAR
attribute	SPAR	units	String	microEinsteins/meter^2/second
variable	temp_diff		float
attribute	temp_diff	_FillValue	float	NaN
attribute	temp_diff	actual_range	float	-9.1227, 0.4047
attribute	temp_diff	bcodmo_name	String	temp_diff
attribute	temp_diff	colorBarMaximum	double	10.0
attribute	temp_diff	colorBarMinimum	double	-10.0
attribute	temp_diff	description	String	Temperature Difference. Originally named 'T2-T190C'.
attribute	temp_diff	long_name	String	Temp Diff
attribute	temp_diff	units	String	degrees Celsius
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	NaN
attribute	depth	actual_range	double	1.0, 3238.0
attribute	depth	axis	String	Z
attribute	depth	bcodmo_name	String	depth
attribute	depth	colorBarMaximum	double	8000.0
attribute	depth	colorBarMinimum	double	-8000.0
attribute	depth	colorBarPalette	String	TopographyDepth
attribute	depth	description	String	Depth. Originally named 'depSM'.
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
attribute	depth	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/DEPH/
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	density		double
attribute	density	_FillValue	double	NaN
attribute	density	actual_range	double	-9.99E-29, 1042.6558
attribute	density	bcodmo_name	String	density
attribute	density	description	String	Primary measure of density in kilograms per cubic meter. Originally named 'density00'.
attribute	density	long_name	String	Density
attribute	density	units	String	kilograms/cubic meter [kg/m^3]
variable	density_2		double
attribute	density_2	_FillValue	double	NaN
attribute	density_2	actual_range	double	-9.99E-29, 1052.7065
attribute	density_2	bcodmo_name	String	density
attribute	density_2	description	String	Secondary measure of density in kilograms per cubic meter. Originally named 'density11'.
attribute	density_2	long_name	String	Density 2
attribute	density_2	units	String	kilograms/cubic meter [kg/m^3]
variable	sal		float
attribute	sal	_FillValue	float	NaN
attribute	sal	actual_range	float	-9.99E-29, 52.6288
attribute	sal	bcodmo_name	String	sal
attribute	sal	description	String	Primary salinity measurement. Originally named 'sal00'.
attribute	sal	long_name	String	Sal
attribute	sal	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/
attribute	sal	units	String	practical salinity units [PSU]
variable	sal_2		float
attribute	sal_2	_FillValue	float	NaN
attribute	sal_2	actual_range	float	-9.99E-29, 65.6863
attribute	sal_2	bcodmo_name	String	sal
attribute	sal_2	description	String	Secondary salinity measurement. Originally named 'sal11'.
attribute	sal_2	long_name	String	Sal 2
attribute	sal_2	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/
attribute	sal_2	units	String	practical salinity units [PSU]
variable	sound_vel		float
attribute	sound_vel	_FillValue	float	NaN
attribute	sound_vel	actual_range	float	-9.99E-29, 1544.73
attribute	sound_vel	bcodmo_name	String	sound_vel
attribute	sound_vel	description	String	Sound velocity in meters per second. Originally named 'svCM'.
attribute	sound_vel	long_name	String	Sound Vel
attribute	sound_vel	units	String	meters/second [m/s]
variable	sound_vel_2		float
attribute	sound_vel_2	_FillValue	float	NaN
attribute	sound_vel_2	actual_range	float	-9.99E-29, 1544.7
attribute	sound_vel_2	bcodmo_name	String	sound_vel
attribute	sound_vel_2	description	String	Sound velocity in meters per second from secondary sensor. Originally named 'svCM1'.
attribute	sound_vel_2	long_name	String	Sound Vel 2
attribute	sound_vel_2	units	String	meters/second [m/s]
variable	O2		float
attribute	O2	_FillValue	float	NaN
attribute	O2	actual_range	float	-16.496, 209.498
attribute	O2	bcodmo_name	String	O2_umol_L
attribute	O2	description	String	Oxygen concentration from SBE 43. Originally named 'sbeox0Mm/L'.
attribute	O2	long_name	String	O2
attribute	O2	units	String	micromol/liter [umol/l]
variable	descent_rate		float
attribute	descent_rate	_FillValue	float	NaN
attribute	descent_rate	actual_range	float	-2.0, 1.731
attribute	descent_rate	bcodmo_name	String	descent_rate
attribute	descent_rate	description	String	Descent Rate. Originally named 'dz/dtM'.
attribute	descent_rate	long_name	String	Descent Rate
attribute	descent_rate	units	String	meters/second [m/s]
variable	flag		float
attribute	flag	_FillValue	float	NaN
attribute	flag	actual_range	float	-9.99E-29, 0.0
attribute	flag	bcodmo_name	String	q_flag
attribute	flag	colorBarMaximum	double	150.0
attribute	flag	colorBarMinimum	double	0.0
attribute	flag	description	String	Quality flag; bad flag = -9.99e-29.
attribute	flag	long_name	String	Flag
attribute	flag	units	String	unitless

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