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log in [Bulk sediment MAZ-1E-04] - Bulk sediment measurements in the eastern Pacific during the last deglaciation determined from core MAZ-1E-04 collected on cruise MAZ-I aboard the R/V El Puma in April 2015 (Glacial-Interglacial Changes in Oxygen Minimum Zones Using Deep-Dwelling, Low-Oxygen Planktic Foraminifera) The structure and drivers of oxygen minimum zone (OMZ) evolution in the Eastern Tropical North Pacific (ETNP) are investigated from ~20.7-10 ka using a multi-proxy approach from core MAZ-1E-04 (22°54.29'N, 106°54.59'W; 1463 m depth). Understanding how OMZ vertical structure changed during past glacial/interglacial cycles will help elucidate the drivers and patterns of OMZ expansion/contraction on longer timescales. \n\nHere, measurements from core MAZ-1E-04 bulk sediment, collected on cruise MAZ-I aboard the R/V El Puma in April 2015, are used to examine levels of denitrification and preservation changes through the last deglaciation. This dataset presents bulk sediment δ¹⁵N, organic carbon δ¹³C, %N, and C:N ratios. Universidad Nacional Autónoma de México financed ship time and M. Alejandro Rodríguez Ramírez directed the oceanographic campaign to retrieve the core.\n\ncdm_data_type = Other\nVARIABLES:\nDepth_core (centimeter (cm))\nAge (years before present (ybp))\nd15N (per mil)\nd13C (per mil)\npct_N (%N)\nC_N_ratio (unitless)\n BCO-DMO bcodmo_dataset_991502_v1
log in [Carpinteria Salt Marsh Sulfur Speciation in Sediments and Biomass] - Sulfur speciation of sediment and biomass from the Carpinteria Salt March sampled in 2020 and 2021 (Carbon Storage in Mangrove Ecosystems via Abiotic Sulfurization) Here we provide data that help to evaluate organic matter sulfurization and pyrite formation in a salt marsh in California. We collected six sediment cores from three habitat types at Carpinteria Salt Marsh Reserve (34.41336°N, 119.84365°W) in July 2020. One core was used to establish dry bulk density, while the other was reserved for geochemical measurements. Both cores were kept at -20°C until analysis could be carried out. We provide data on the speciation of sulfur in acid hydrolysis resistant organic matter and biomass samples. Data will be useful for those interested in assessing organic matter sulfurization in blue carbon ecosystems such as mangroves, seagrass meadows and salt marshes. Data will also be informative for researchers investigating organic sulfur cycling. Samples were collected by Lena Capece and Morgan Raven, data were interpreted by Lena Capece and Morgan Raven.\n\ncdm_data_type = Other\nVARIABLES:\ncollection_date (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\ntype (unitless)\nlocation (unitless)\nhabitat (unitless)\ndepth_core (Depth, cm)\ndisulfide (fraction as a decimal)\nmonosulfide (fraction as a decimal)\naromatic (fraction as a decimal)\nsulfoxide (fraction as a decimal)\nsulfonate (fraction as a decimal)\nsulfate_ester (fraction as a decimal)\nchi_sq (unitless)\nreduced (fraction as a decimal)\noxidized (fraction as a decimal)\n BCO-DMO bcodmo_dataset_938382_v1
log in [Foraminiferal oxygen and carbon isotopes MAZ-1E-04] - Multispecies foraminiferal oxygen and carbon isotopes in the eastern Pacific through the last deglaciation determined from core MAZ-1E-04 collected on cruise MAZ-I aboard the R/V El Puma in April 2015 (Glacial-Interglacial Changes in Oxygen Minimum Zones Using Deep-Dwelling, Low-Oxygen Planktic Foraminifera) The structure and drivers of oxygen minimum zone (OMZ) evolution in the Eastern Tropical North Pacific (ETNP) are investigated from ~20.7-10 ka using a multi-proxy from core MAZ-1E-04 (22°54.29'N, 106°54.59'W; 1463 m depth). Understanding how OMZ vertical structure changed during past glacial/interglacial cycles will help elucidate the drivers and patterns of OMZ expansion/contraction on longer timescales. \n\nHere, multispecies foraminiferal oxygen and carbon isotopes determined from core MAZ-1E-04 collected on cruise MAZ-I aboard the R/V El Puma in April 2015 are used to reconstruct OMZ vertical extent through the last deglaciation. Universidad Nacional Autónoma de México financed ship time and M. Alejandro Rodríguez Ramírez directed the oceanographic campaign to retrieve the core.\n\ncdm_data_type = Other\nVARIABLES:\nDepth_core (centimeter (cm))\nAge (years before present (ybp))\nN_dutertrei_count (unitless)\nN_dutertrei_weight (micrograms)\nN_dutertrei_d18O (per mil)\nN_dutertrei_d13C (per mil)\nUvigerina_spp_count (unitless)\nUvigerina_spp_weight (micrograms)\nUvigerina_spp_d18O (per mil)\nUvigerina_spp_d13C (per mil)\nG_ruber_count (unitless)\nG_ruber_weight (micrograms)\nG_ruber_d18O (per mil)\nG_ruber_d13C (per mil)\nG_hexagonus_count (unitless)\nG_hexagonus_weight (micrograms)\nG_hexagonus_d18O (per mil)\nG_hexagonus_d13C (per mil)\n BCO-DMO bcodmo_dataset_991484_v1
log in [I/Ca ratios MAZ-1E-04] - Iodine:calcium ratios in planktic foraminifera in the eastern Pacific through the last deglaciation determined from core MAZ-1E-04 collected on cruise MAZ-I aboard the R/V El Puma in April 2015 (Glacial-Interglacial Changes in Oxygen Minimum Zones Using Deep-Dwelling, Low-Oxygen Planktic Foraminifera) The structure and drivers of oxygen minimum zone (OMZ) evolution in the Eastern Tropical North Pacific (ETNP) are investigated from ~20.7-10 ka using a multi-proxy approach from core MAZ-1E-04 (22°54.29'N, 106°54.59'W; 1463 m depth). Understanding how OMZ vertical structure changed during past glacial/interglacial cycles will help elucidate the drivers and patterns of OMZ expansion/contraction on longer timescales. \n\nHere, Iodine:Calcium ratios are used from planktic foraminifera N. dutertrei from core MAZ-1E-04 collected on cruise MAZ-I aboard the R/V El Puma in April 2015 to identify periods of low oxygen within the thermocline. Universidad Nacional Autónoma de México financed ship time and M. Alejandro Rodríguez Ramírez directed the oceanographic campaign to retrieve the core.\n\ncdm_data_type = Other\nVARIABLES:\nDepth_core (centimeter (cm))\nAge (years before present (yr BP))\nN_dutertrei_count (unitless)\nWeight (micrograms)\nI_Ca (micromol per mol)\n BCO-DMO bcodmo_dataset_991492_v1
log in [MAZ-1E-04 age model in the eastern Pacific during the last deglaciation] - Age model built from planktic foraminifera radiocarbon in the eastern Pacific during the last deglaciation determined from core MAZ-1E-04 collected on cruise MAZ-I aboard the R/V El Puma in April 2015 (Glacial-Interglacial Changes in Oxygen Minimum Zones Using Deep-Dwelling, Low-Oxygen Planktic Foraminifera) The structure and drivers of oxygen minimum zone (OMZ) evolution in the Eastern Tropical North Pacific (ETNP) are investigated from ~20.7-10 ka using a multi-proxy approach from core MAZ-1E-04 (22°54.29'N, 106°54.59'W; 1463 m depth). Understanding how OMZ vertical structure changed during past glacial/interglacial cycles will help elucidate the drivers and patterns of OMZ expansion/contraction on longer timescales. \n\nHere, the age model built from planktic foraminifera radiocarbon and calibrated with marine reservoir ages and the intcal20 calibration curve, based on samples from core MAZ-1E-04 collected on cruise MAZ-I aboard the R/V El Puma in April 2015, is used to investigate multiple geochemical proxies over the last deglaciation. Universidad Nacional Autónoma de México financed ship time and M. Alejandro Rodríguez Ramírez directed the oceanographic campaign to retrieve the core.\n\ncdm_data_type = Other\nVARIABLES:\nDepth_core (centimeter (cm))\nMean_Age (years before present (yr BP))\nAge_model_1_SD (years before present (yr BP))\nMedian (years before present (yr BP))\n BCO-DMO bcodmo_dataset_991455_v1
log in [Planktic foraminifera assemblages MAZ-1E-04] - Planktic foraminifera assemblages in the eastern Pacific during the last deglaciation determined from core MAZ-1E-04 collected on cruise MAZ-I aboard the R/V El Puma in April 2015 (Glacial-Interglacial Changes in Oxygen Minimum Zones Using Deep-Dwelling, Low-Oxygen Planktic Foraminifera) The structure and drivers of oxygen minimum zone (OMZ) evolution in the Eastern Tropical North Pacific (ETNP) are investigated from ~20.7-10 ka using planktic foraminiferal assemblages alongside multiple other proxies from core MAZ-1E-04 (22°54.29'N, 106°54.59'W; 1463 m depth). Understanding how OMZ vertical structure changed during past glacial/interglacial cycles will help elucidate the drivers and patterns of OMZ expansion/contraction on longer timescales. \n\nPlanktic foraminifera assemblage counts from core MAZ-1E-04, collected on cruise MAZ-I aboard the R/V El Puma in April 2015, are used here to explore any composition shifts driven by environmental changes. Universidad Nacional Autónoma de México financed ship time and M. Alejandro Rodríguez Ramírez directed the oceanographic campaign to retrieve the core.\n\ncdm_data_type = Other\nVARIABLES:\nDepth_core (centimeter (cm))\nAge (years before present (ybp))\nPlanktic_sample_split (unitless)\nG_bulloides (unitless)\nG_ruber (unitless)\nT_sacculifer (unitless)\nG_glutinata (unitless)\nN_dutertrei (unitless)\nN_incompta (unitless)\nG_cultrata (unitless)\nG_tumida (unitless)\nG_siphonifera (unitless)\nO_universa (unitless)\nG_scitula (unitless)\nG_rubescens (unitless)\nG_tenellus (unitless)\nN_pachyderma (unitless)\nT_quinqueloba (unitless)\n... (11 more variables)\n BCO-DMO bcodmo_dataset_991444_v1
log in [rad_sed_core] - Radionuclides sediment cores collected on the R/V Thomas G. Thompson cruise TT013 in the Equatorial Pacific in 1992 during the U.S. JGOFS Equatorial Pacific (EqPac) project (U.S. JGOFS Equatorial Pacific) This dataset reports measurements of radionuclides detected in sediment core samples collected on the R/V Thomas G. Thompson cruise TT013 in the Equatorial Pacific in 1992 during the U.S. JGOFS Equatorial Pacific (EqPac) project.\n\ncdm_data_type = Other\nVARIABLES:\nevent (unitless)\nsta (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\ncore_type (unitless)\ndepth_core (centimeters)\nU238 (dpm/gram)\nU238_err (dpm/gram)\nTh232 (dpm/gram)\nTh232_err (dpm/gram)\nTh230 (dpm/gram)\nTh230_err (dpm/gram)\nPa231 (dpm/gram)\nPa231_err (dpm/gram)\nBe10 (atoms/gram)\nBe10_err (atoms/gram)\nCaCO3 (percent)\nopal (percent)\nC14_age (years)\nC14_age_err (years)\n BCO-DMO bcodmo_dataset_985428_v1
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_985428_v2 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_985428_v2.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_985428_v2/ public [rad_sed_core] - Radionuclides sediment cores collected on the R/V Thomas G. Thompson cruise TT013 in the Equatorial Pacific in 1992 during the U.S. JGOFS Equatorial Pacific (EqPac) project (U.S. JGOFS Equatorial Pacific) This dataset reports measurements of radionuclides detected in sediment core samples collected on the R/V Thomas G. Thompson cruise TT013 in the Equatorial Pacific in 1992 during the U.S. JGOFS Equatorial Pacific (EqPac) project.\n\ncdm_data_type = Other\nVARIABLES:\nevent (unitless)\nsta (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\ncore_type (unitless)\ndepth_water (meters)\ndepth_core (centimeters)\nU238 (dpm/gram)\nU238_err (dpm/gram)\nTh232 (dpm/gram)\nTh232_err (dpm/gram)\nTh230 (dpm/gram)\nTh230_err (dpm/gram)\nPa231 (dpm/gram)\nPa231_err (dpm/gram)\nBe10 (atoms/gram)\nBe10_err (atoms/gram)\nCaCO3 (percent)\nopal (percent)\nC14_age (years)\nC14_age_err (years)\n https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_985428_v2_fgdc.xml https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_985428_v2_iso19115.xml https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_985428_v2/index.htmlTable https://osprey.bco-dmo.org/dataset/985428 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_985428_v2.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_985428_v2&showErrors=false&email= BCO-DMO bcodmo_dataset_985428_v2

 
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