BCO-DMO ERDDAP
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Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv
attribute NC_GLOBAL acquisition_description String Methods are as per \\\"Southward Shift of the Pacific ITCZ During the Holocene\\\"\nin Paleoceanography and Paleoclimatology, volume 33, pages 1383-1395 (Sachs et\nal. 2018).\n \nSediment core PTLN\\u2010PC1 was collected September 2013 in sequential 1m\nsections using a 5cm\\u2010diameter Colinvaux\\u2010Vohnout\nLivingstone\\u2010type rod\\u2010operated piston corer (Geocore, Columbus,\nOhio). Each section was sealed in the field and refrigerated at 4 \\u00b0C\nuntil core splitting and subsampling.\n \nSample ages were linearly interpolated from calibrated 14C dates (see dataset\n\\\"T Lake PC1 Chronology\\\") using the Clam 2.2 (Blaauw, 2010) software package.\n \nSediment subsamples were transferred to combusted glass vials, frozen, then\nfreeze dried. Lipids were extracted with 10% methanol in dichloromethane on an\naccelerated solvent extractor (ASE 200; Dionex) at 100\\u00b0C and 1500 psi\nwith three 5\\u2010min static cycles. Lipid extracts were saponified using 2:1\n1N KOH in methanol:water at 70\\u00b0C overnight. Saponified extracts were\nacidified to pH ~1 with HCl, neutral lipids extracted from the water/methanol\nphase with hexane, and the hexane extracts washed with water. Lipid extracts\nwere acetylated at 70\\u00b0C for 30 min in a mixture of 20 \\u03bcl acetic\nanhydride of known isotopic composition and 20 \\u03bcl pyridine. Sterol\nacetates were then isolated via preparative high\\u2010performance liquid\nchromatography as per the methods in Nelson and Sachs (2013, 2014). Extracts\nwere taken up in 25 \\u03bcl of 2:1 dichloromethane:methanol and the complete\nvolume injected onto an Agilent 1100 high\\u2010performance liquid\nchromatography system equipped with a Zorbax Eclipse XDB C18 column; after an\ninitial elution of polar compounds in 5:95 methanol:acetonitrile, sterol\nacetates were eluted with an isocratic mobile phase of 5:10:85 methanol:ethyl\nacetate:acetonitrile. Aliquots (5%) of each sample were injected on an Agilent\n6890N GC with flame ionization detector and PTV inlet, equipped with an\nAgilent VF\\u201017 ms column (60 m \\u00d7 0.32 mm \\u00d7 0.25 \\u03bcm), in\nsplitless mode at 300\\u00b0C using helium carrier gas at 1.5 ml/min. The\ninitial oven temperature was 110\\u00b0C, followed by a ramp to 320\\u00b0C at\n5\\u00b0C/min, and was then held for 20 min. Detector response was determined\nvia an \\u03b1\\u2010cholestane internal standard. Dinosterol fluxes were\ncalculated from the product of dinosterol concentration per gram dry weight of\nsediment, the linear sediment accumulation rate, and the dry bulk density of\nsediment. Uncertainty in dinosterol fluxes is conservatively assumed to be\n25%.\n \nHydrogen isotopes of dinosterol were measured via a modification of the\nprocedures outlined in Nelson and Sachs (2013). Gas chromatography was\nconducted using a Thermo Trace GC Ultra equipped with a GC\\u2010TC interface.\nSamples were injected into the 330\\u00b0C inlet in splitless mode, with a 1.1\nml/min helium carrier flow through a VF\\u201017 ms column (60 m \\u00d7 0.25 mm\n\\u00d7 0.25 \\u03bcm). The oven temperature was held at 120\\u00b0C for the\n2\\u2010min splitless time, increased to 260 \\u00b0C at 20 \\u00b0C/min,\nincreased to 325\\u00b0C at 1\\u00b0C/min, and held for 10 min. The pyrolysis\ninterface was operated at 1400\\u00b0C, and the sample hydrogen admitted to a\nThermo Delta V Plus isotope ratio mass spectrometer via open split.\n \nIsotope measurements are given as \\u03b4\\u00b2>H values relative to Vienna\nStandard Mean Ocean Water and calibrated via external isotope standards (Arndt\nSchimmelmann, Indiana University). Secondary corrections were determined based\non time\\u2010in\\u2010sequence, retention time, and peak area, as necessary, on\na sequence\\u2010by\\u2010sequence basis. Each sample analyzed at least three\ntimes. \\u03b4\\u00b2H values were corrected for added acetate hydrogen\n(\\u2212124.4\\u2030 \\u00b1 8.1) via mass balance. Uncertainty is given as the\nstandard deviation of these replicate analyses and uncertainty in the value of\nthe known acetate, propagated through the mass balance calculation.
attribute NC_GLOBAL awards_0_award_nid String 55103
attribute NC_GLOBAL awards_0_award_number String OCE-1241255
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1241255 (external link)
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 David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL awards_1_award_nid String 55104
attribute NC_GLOBAL awards_1_award_number String OCE-1241247
attribute NC_GLOBAL awards_1_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1241247 (external link)
attribute NC_GLOBAL awards_1_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_1_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_1_funding_source_nid String 355
attribute NC_GLOBAL awards_1_program_manager String David L. Garrison
attribute NC_GLOBAL awards_1_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Abundance and d2H of dinosterol in down core lake sediments from T Lake, Palau \n  PI: Julian P. Sachs (University of Washington) \n  Co-PI: Michael Dawson (UC Merced) \n  Version date: 19-June-2019
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/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3  19 Dec 2019
attribute NC_GLOBAL date_created String 2019-06-19T19:31:14Z
attribute NC_GLOBAL date_modified String 2019-06-24T17:25:13Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.771344.1
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/771344 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String IR Mass Spec
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Delta V Plus IRMS (Thermo). Isotope ratio mass spectrometer with continuous flow inlet, interfaced to open split in GC-TC interface.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 771407
attribute NC_GLOBAL instruments_0_description String The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB16/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Isotope-ratio Mass Spectrometer
attribute NC_GLOBAL instruments_0_instrument_nid String 469
attribute NC_GLOBAL instruments_0_supplied_name String Delta V Plus IRMS (Thermo)
attribute NC_GLOBAL instruments_1_acronym String HPLC
attribute NC_GLOBAL instruments_1_dataset_instrument_description String 1100 HPLC system (Agilent). High performance liquid chromatograph, equipped with fraction collector for preparative separations.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 771404
attribute NC_GLOBAL instruments_1_description String A High-performance liquid chromatograph (HPLC) is a type of liquid chromatography used to separate compounds that are dissolved in solution. HPLC instruments consist of a reservoir of the mobile phase, a pump, an injector, a separation column, and a detector. Compounds are separated by high pressure pumping of the sample mixture onto a column packed with microspheres coated with the stationary phase. The different components in the mixture pass through the column at different rates due to differences in their partitioning behavior between the mobile liquid phase and the stationary phase.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB11/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String High Performance Liquid Chromatograph
attribute NC_GLOBAL instruments_1_instrument_nid String 506
attribute NC_GLOBAL instruments_1_supplied_name String 1100 HPLC system (Agilent)
attribute NC_GLOBAL instruments_2_acronym String Piston Corer
attribute NC_GLOBAL instruments_2_dataset_instrument_description String Colinvaux‐Vohnout Livingstone‐type rod‐operated piston corer (Geocore, Columbus, Ohio). Hand-operated sediment coring device.
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 771403
attribute NC_GLOBAL instruments_2_description String The piston corer is a type of bottom sediment sampling device. A long, heavy tube is plunged into the seafloor to extract samples of mud sediment. A piston corer uses a \"free fall\" of the coring rig to achieve a greater initial force on impact than gravity coring.  A sliding piston inside the core barrel reduces inside wall friction with the sediment and helps to evacuate displaced water from the top of the corer. A piston corer is capable of extracting core samples up to 90 feet in length.
attribute NC_GLOBAL instruments_2_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/51/ (external link)
attribute NC_GLOBAL instruments_2_instrument_name String Piston Corer
attribute NC_GLOBAL instruments_2_instrument_nid String 519
attribute NC_GLOBAL instruments_2_supplied_name String Colinvaux‐Vohnout Livingstone‐type rod‐operated piston corer
attribute NC_GLOBAL instruments_3_acronym String Gas Chromatograph
attribute NC_GLOBAL instruments_3_dataset_instrument_description String 6890N GC (Agilent). Gas chromatograph equipped with flame ionization detector and PTV (programmable temperature volatilization) inlet.
attribute NC_GLOBAL instruments_3_dataset_instrument_nid String 771405
attribute NC_GLOBAL instruments_3_description String Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC)
attribute NC_GLOBAL instruments_3_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB02/ (external link)
attribute NC_GLOBAL instruments_3_instrument_name String Gas Chromatograph
attribute NC_GLOBAL instruments_3_instrument_nid String 661
attribute NC_GLOBAL instruments_3_supplied_name String 6890N GC (Agilent)
attribute NC_GLOBAL instruments_4_acronym String Gas Chromatograph
attribute NC_GLOBAL instruments_4_dataset_instrument_description String Trace GC Ultra (Thermo). Gas chromatograph equipped with pyrolysis interface (GC-TC II) and split/splitless inlet.
attribute NC_GLOBAL instruments_4_dataset_instrument_nid String 771406
attribute NC_GLOBAL instruments_4_description String Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC)
attribute NC_GLOBAL instruments_4_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB02/ (external link)
attribute NC_GLOBAL instruments_4_instrument_name String Gas Chromatograph
attribute NC_GLOBAL instruments_4_instrument_nid String 661
attribute NC_GLOBAL instruments_4_supplied_name String Trace GC Ultra (Thermo)
attribute NC_GLOBAL instruments_5_acronym String ASE
attribute NC_GLOBAL instruments_5_dataset_instrument_description String ASE 200 Accelerated Solvent Extractor (Dionex). High pressure/temperature solvent extractor.
attribute NC_GLOBAL instruments_5_dataset_instrument_nid String 771409
attribute NC_GLOBAL instruments_5_description String Accelerated solvent extraction (ASE) is a method for extracting various chemicals from a complex solid or semisolid sample matrix. The process uses high temperature and pressure, which results in the extraction taking less time and requiring less solvent, and possibly also giving better analyte recovery, than traditional methods that use less extreme conditions.
attribute NC_GLOBAL instruments_5_instrument_name String Accelerated Solvent Extractor
attribute NC_GLOBAL instruments_5_instrument_nid String 771408
attribute NC_GLOBAL instruments_5_supplied_name String ASE 200 Accelerated Solvent Extractor (Dionex)
attribute NC_GLOBAL keywords String 1sig, age, age_ybp, bco, bco-dmo, biological, chemical, conc, conc_dino, data, dataset, dbd, depth, depth_cm, dino, dino_2H, dino_2H_1sig, dmo, erddap, flux, flux_dino, management, oceanography, office, preliminary, ybp
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/771344/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/771344 (external link)
attribute NC_GLOBAL param_mapping String {'771344': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/771344/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of Washington
attribute NC_GLOBAL people_0_affiliation_acronym String UW
attribute NC_GLOBAL people_0_person_name String Julian P. Sachs
attribute NC_GLOBAL people_0_person_nid String 51578
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 University of California-Merced
attribute NC_GLOBAL people_1_affiliation_acronym String UC Merced
attribute NC_GLOBAL people_1_person_name String Michael N Dawson
attribute NC_GLOBAL people_1_person_nid String 51577
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 Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_2_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_2_person_name String Shannon Rauch
attribute NC_GLOBAL people_2_person_nid String 51498
attribute NC_GLOBAL people_2_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL project String PaPaPro
attribute NC_GLOBAL projects_0_acronym String PaPaPro
attribute NC_GLOBAL projects_0_description String This project will survey the taxonomic, genetic, and functional diversity of the organisms found in marine lakes, and investigate the processes that cause gains and losses in this biodiversity. Marine lakes formed as melting ice sheets raised sea level after the last glacial maximum and flooded hundreds of inland valleys around the world. Inoculated with marine life from the surrounding sea and then isolated to varying degrees for the next 6,000 to 15,000 years, these marine lakes provide multiple, independent examples of how environments and interactions between species can drive extinction and speciation. Researchers will survey the microbes, algae, invertebrates, and fishes present in 40 marine lakes in Palau and Papua, and study how diversity has changed over time by retrieving the remains of organisms preserved in sediments on the lake bottoms. The project will test whether the number of species, the diversity of functional roles played by organisms, and the genetic diversity within species increase and decrease in parallel; whether certain species can greatly curtail diversity by changing the environment; whether the size of a lake determines its biodiversity; and whether the processes that control diversity in marine organisms are similar to those that operate on land.\nBecause biodiversity underlies the ecosystem services on which society depends, society has a great interest in understanding the processes that generate and retain biodiversity in nature. This project will also help conserve areas of economic importance. Marine lakes in the study region are important for tourism, and researchers will work closely with governmental and non-governmental conservation and education groups and with diving and tourism businesses to raise awareness of the value and threats to marine lakes in Indonesia and Palau.
attribute NC_GLOBAL projects_0_end_date String 2017-12
attribute NC_GLOBAL projects_0_geolocation String Western Pacific; Palau; Indonesia (West Papua)
attribute NC_GLOBAL projects_0_name String Do Parallel Patterns Arise from Parallel Processes?
attribute NC_GLOBAL projects_0_project_nid String 2238
attribute NC_GLOBAL projects_0_project_website String http://marinelakes.ucmerced.edu/ (external link)
attribute NC_GLOBAL projects_0_start_date String 2013-01
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 standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Record of abundance and \\u03b42H of dinosterol in down core lake sediments from T Lake, Palau collected in September 2013 using a 5cm\\u2010diameter Colinvaux\\u2010Vohnout Livingstone\\u2010type rod\\u2010operated piston corer.
attribute NC_GLOBAL title String [T Lake 1200-yr Reconstruction] - Record of abundance and δ2H of dinosterol in down core lake sediments from T Lake, Palau collected in September 2013 (Do Parallel Patterns Arise from Parallel Processes?)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable depth_cm short
attribute depth_cm _FillValue short 32767
attribute depth_cm actual_range short 85, 1240
attribute depth_cm bcodmo_name String depth_core
attribute depth_cm colorBarMaximum double 8000.0
attribute depth_cm colorBarMinimum double -8000.0
attribute depth_cm colorBarPalette String TopographyDepth
attribute depth_cm description String composite depth, top of 1cm sampling interval
attribute depth_cm long_name String Depth
attribute depth_cm standard_name String depth
attribute depth_cm units String centimeters (cm)
variable age_ybp short
attribute age_ybp _FillValue short 32767
attribute age_ybp actual_range short 177, 10432
attribute age_ybp bcodmo_name String age
attribute age_ybp description String linear interpolation of PTLN_PC1_chron via CLAM 2.2
attribute age_ybp long_name String Age Ybp
attribute age_ybp units String years before present (yr bp)
variable conc_dino float
attribute conc_dino _FillValue float NaN
attribute conc_dino actual_range float 0.4, 44.8
attribute conc_dino bcodmo_name String density
attribute conc_dino description String dry bulk sediment density
attribute conc_dino long_name String Conc Dino
attribute conc_dino units String grams per cubic centimeter (g cm-3)
variable dbd float
attribute dbd _FillValue float NaN
attribute dbd actual_range float 0.442, 1.906
attribute dbd bcodmo_name String Sed_dinosterol
attribute dbd description String dinosterol per gram dry sediment
attribute dbd long_name String DBD
attribute dbd units String micrograms (ug)
variable flux_dino float
attribute flux_dino _FillValue float NaN
attribute flux_dino actual_range float 0.1, 10.5
attribute flux_dino bcodmo_name String Sed_Lipids
attribute flux_dino description String dinosterol per square centimeter per year
attribute flux_dino long_name String Flux Dino
attribute flux_dino units String micrograms per square centimeter per year (ug cm-2 yr-1)
variable dino_2H short
attribute dino_2H _FillValue short 32767
attribute dino_2H actual_range short -325, 999
attribute dino_2H bcodmo_name String d2H
attribute dino_2H description String delta 2H (d2h) of dinosterol vs. SMOW
attribute dino_2H long_name String Dino 2 H
attribute dino_2H units String per mil (‰)
variable dino_2H_1sig float
attribute dino_2H_1sig _FillValue float NaN
attribute dino_2H_1sig actual_range float 0.6, 999.0
attribute dino_2H_1sig bcodmo_name String d2H
attribute dino_2H_1sig description String 1 standard deviation of replicate analyses of 2H_dino
attribute dino_2H_1sig long_name String Dino 2 H 1sig
attribute dino_2H_1sig units String per mil (‰)

 
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