Measurements on N-Isotopes of BIGO stations during METEOR cruise M107
In situ fluxes of solutes were measured in benthic chambers along an E-W transect at 18.1 oN using autonomous Biogeochemical Observatories (BIGO). A total of nine BIGO deployments were made at nine stations along a latitudinal transect across the shelf/slope covering a horizontal distance of 50 km f...
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PANGAEA
2022
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.941569 https://doi.org/10.1594/PANGAEA.941569 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.941569 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
BIGO Biogeochemical observatory Climate - Biogeochemistry Interactions in the Tropical Ocean Date/Time of event Elevation of event Event label Geochemistry isotopes Latitude of event Longitude of event M107 M107_527-1 M107_547-1 M107_557-1 M107_598-1 M107_617-1 M107_630-1 M107_665-1 M107_673-1 M107_688-1 Meteor (1986) North Atlantic Ocean Number REEBUS Role of Eddies for the Carbon Pump in Coastal upwelling Areas Sample code/label SFB754 Time in hours δ15N ammonium nitrate δ18O |
spellingShingle |
BIGO Biogeochemical observatory Climate - Biogeochemistry Interactions in the Tropical Ocean Date/Time of event Elevation of event Event label Geochemistry isotopes Latitude of event Longitude of event M107 M107_527-1 M107_547-1 M107_557-1 M107_598-1 M107_617-1 M107_630-1 M107_665-1 M107_673-1 M107_688-1 Meteor (1986) North Atlantic Ocean Number REEBUS Role of Eddies for the Carbon Pump in Coastal upwelling Areas Sample code/label SFB754 Time in hours δ15N ammonium nitrate δ18O Dale, Andy W Lomnitz, Ulrike Daehnke, Kirstin Measurements on N-Isotopes of BIGO stations during METEOR cruise M107 |
topic_facet |
BIGO Biogeochemical observatory Climate - Biogeochemistry Interactions in the Tropical Ocean Date/Time of event Elevation of event Event label Geochemistry isotopes Latitude of event Longitude of event M107 M107_527-1 M107_547-1 M107_557-1 M107_598-1 M107_617-1 M107_630-1 M107_665-1 M107_673-1 M107_688-1 Meteor (1986) North Atlantic Ocean Number REEBUS Role of Eddies for the Carbon Pump in Coastal upwelling Areas Sample code/label SFB754 Time in hours δ15N ammonium nitrate δ18O |
description |
In situ fluxes of solutes were measured in benthic chambers along an E-W transect at 18.1 oN using autonomous Biogeochemical Observatories (BIGO). A total of nine BIGO deployments were made at nine stations along a latitudinal transect across the shelf/slope covering a horizontal distance of 50 km from ~50 to ~1110 m water depth. The design and implementation of the BIGO landers has been discussed in detail previously (Krahmann et al. 2021). Each BIGO (I and II) contained two circular flux chambers (K1 and K2) with an internal diameter of 28.8 cm where the sediment was incubated for ~30 h. Discrete samples were taken using glass syringes (eight per chamber) at pre-programmed time intervals for chemical analysis. After BIGO recovery, the syringes were immediately transferred to the onboard cool room (4°C) for filtering (0.2 µm) and sub-sampling. Benthic lander samples were analyzed for the isotopic composition (in per mil units, ‰) of nitrate (δ15N-NO3- and δ18O-NO3-) and ammonium (δ15N-NH4+). Most of the samples were analyzed for δ15N-NO3- and δ18O-NO3-. Nitrate dual isotopes were analyzed using the denitrifier method Samples for δ15N-NH4+ were analyzed using the hypobromite/azide-method where NH4+ concentrations were above the detection limit for a reliable isotope analysis (1 µM). In the denitrifier method, NO3- and NO2- are quantitatively converted to N2O by Pseudomonas aureofaciens (ATTC 13985). The hypobromite/azide-method is based on the chemical conversion of NH4+ to N2O by a subsequent addition of a hypobromite and azide solution. For both methods, the sample volume was adjusted to a sample size of 10 nmol of N2O. N2O was extracted from the sample vials by purging with helium and measured with a GasBench II, coupled to an isotope ratio mass spectrometer (Delta Plus, Thermo Fisher Scientific, Germany). All samples were measured with international standards. NO2- comprised on average 2 % of the combined NO2- + NO3- pool and the contribution of NO2- interference to the reported δ15N and δ18O nitrate values ... |
format |
Dataset |
author |
Dale, Andy W Lomnitz, Ulrike Daehnke, Kirstin |
author_facet |
Dale, Andy W Lomnitz, Ulrike Daehnke, Kirstin |
author_sort |
Dale, Andy W |
title |
Measurements on N-Isotopes of BIGO stations during METEOR cruise M107 |
title_short |
Measurements on N-Isotopes of BIGO stations during METEOR cruise M107 |
title_full |
Measurements on N-Isotopes of BIGO stations during METEOR cruise M107 |
title_fullStr |
Measurements on N-Isotopes of BIGO stations during METEOR cruise M107 |
title_full_unstemmed |
Measurements on N-Isotopes of BIGO stations during METEOR cruise M107 |
title_sort |
measurements on n-isotopes of bigo stations during meteor cruise m107 |
publisher |
PANGAEA |
publishDate |
2022 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.941569 https://doi.org/10.1594/PANGAEA.941569 |
op_coverage |
MEDIAN LATITUDE: 18.230056 * MEDIAN LONGITUDE: -16.523389 * SOUTH-BOUND LATITUDE: 18.166000 * WEST-BOUND LONGITUDE: -16.750000 * NORTH-BOUND LATITUDE: 18.285000 * EAST-BOUND LONGITUDE: -16.316000 * DATE/TIME START: 2014-06-09T13:58:00 * DATE/TIME END: 2014-06-25T18:50:00 * MINIMUM ELEVATION: -1096.0 m * MAXIMUM ELEVATION: -47.0 m |
long_lat |
ENVELOPE(-16.750000,-16.316000,18.285000,18.166000) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Dale, Andrew W; Clemens, David; Dähnke, Kirstin; Korth, Frederike; Wankel, Scott D; Lomnitz, Ulrike; Wallmann, Klaus; Sommer, Stefan (2022): Nitrogen cycling in sediments on the NW African margin inferred from N and O isotopes in benthic chambers. Frontiers in Marine Science, 9, 902062, https://doi.org/10.3389/fmars.2022.902062 Krahmann, Gerd; Arévalo-Martínez, Damian L; Dale, Andy W; Dengler, Marcus; Engel, Anja; Glock, Nicolaas; Grasse, Patricia; Hahn, Johannes; Hauss, Helena; Hopwood, Mark James; Kiko, Rainer; Loginova, Alexandra; Löscher, Carolin R; Maßmig, Marie; Roy, A S; Salvatteci, Renato; Sommer, Stefan; Tanhua, Toste; Mehrtens, Hela (2021): Climate-Biogeochemistry Interactions in the Tropical Ocean: Data collection and legacy. Frontiers in Marine Science, https://doi.org/10.3389/fmars.2021.723304 Sommer, Stefan; Dale, Andy W (2021): Benthic work during METEOR cruise M107 [dataset editorial publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.928206 https://doi.pangaea.de/10.1594/PANGAEA.941569 https://doi.org/10.1594/PANGAEA.941569 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.94156910.3389/fmars.2022.90206210.3389/fmars.2021.72330410.1594/PANGAEA.928206 |
_version_ |
1810464903719288832 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.941569 2024-09-15T18:24:32+00:00 Measurements on N-Isotopes of BIGO stations during METEOR cruise M107 Dale, Andy W Lomnitz, Ulrike Daehnke, Kirstin MEDIAN LATITUDE: 18.230056 * MEDIAN LONGITUDE: -16.523389 * SOUTH-BOUND LATITUDE: 18.166000 * WEST-BOUND LONGITUDE: -16.750000 * NORTH-BOUND LATITUDE: 18.285000 * EAST-BOUND LONGITUDE: -16.316000 * DATE/TIME START: 2014-06-09T13:58:00 * DATE/TIME END: 2014-06-25T18:50:00 * MINIMUM ELEVATION: -1096.0 m * MAXIMUM ELEVATION: -47.0 m 2022 text/tab-separated-values, 1097 data points https://doi.pangaea.de/10.1594/PANGAEA.941569 https://doi.org/10.1594/PANGAEA.941569 en eng PANGAEA Dale, Andrew W; Clemens, David; Dähnke, Kirstin; Korth, Frederike; Wankel, Scott D; Lomnitz, Ulrike; Wallmann, Klaus; Sommer, Stefan (2022): Nitrogen cycling in sediments on the NW African margin inferred from N and O isotopes in benthic chambers. Frontiers in Marine Science, 9, 902062, https://doi.org/10.3389/fmars.2022.902062 Krahmann, Gerd; Arévalo-Martínez, Damian L; Dale, Andy W; Dengler, Marcus; Engel, Anja; Glock, Nicolaas; Grasse, Patricia; Hahn, Johannes; Hauss, Helena; Hopwood, Mark James; Kiko, Rainer; Loginova, Alexandra; Löscher, Carolin R; Maßmig, Marie; Roy, A S; Salvatteci, Renato; Sommer, Stefan; Tanhua, Toste; Mehrtens, Hela (2021): Climate-Biogeochemistry Interactions in the Tropical Ocean: Data collection and legacy. Frontiers in Marine Science, https://doi.org/10.3389/fmars.2021.723304 Sommer, Stefan; Dale, Andy W (2021): Benthic work during METEOR cruise M107 [dataset editorial publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.928206 https://doi.pangaea.de/10.1594/PANGAEA.941569 https://doi.org/10.1594/PANGAEA.941569 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess BIGO Biogeochemical observatory Climate - Biogeochemistry Interactions in the Tropical Ocean Date/Time of event Elevation of event Event label Geochemistry isotopes Latitude of event Longitude of event M107 M107_527-1 M107_547-1 M107_557-1 M107_598-1 M107_617-1 M107_630-1 M107_665-1 M107_673-1 M107_688-1 Meteor (1986) North Atlantic Ocean Number REEBUS Role of Eddies for the Carbon Pump in Coastal upwelling Areas Sample code/label SFB754 Time in hours δ15N ammonium nitrate δ18O dataset 2022 ftpangaea https://doi.org/10.1594/PANGAEA.94156910.3389/fmars.2022.90206210.3389/fmars.2021.72330410.1594/PANGAEA.928206 2024-08-21T00:02:27Z In situ fluxes of solutes were measured in benthic chambers along an E-W transect at 18.1 oN using autonomous Biogeochemical Observatories (BIGO). A total of nine BIGO deployments were made at nine stations along a latitudinal transect across the shelf/slope covering a horizontal distance of 50 km from ~50 to ~1110 m water depth. The design and implementation of the BIGO landers has been discussed in detail previously (Krahmann et al. 2021). Each BIGO (I and II) contained two circular flux chambers (K1 and K2) with an internal diameter of 28.8 cm where the sediment was incubated for ~30 h. Discrete samples were taken using glass syringes (eight per chamber) at pre-programmed time intervals for chemical analysis. After BIGO recovery, the syringes were immediately transferred to the onboard cool room (4°C) for filtering (0.2 µm) and sub-sampling. Benthic lander samples were analyzed for the isotopic composition (in per mil units, ‰) of nitrate (δ15N-NO3- and δ18O-NO3-) and ammonium (δ15N-NH4+). Most of the samples were analyzed for δ15N-NO3- and δ18O-NO3-. Nitrate dual isotopes were analyzed using the denitrifier method Samples for δ15N-NH4+ were analyzed using the hypobromite/azide-method where NH4+ concentrations were above the detection limit for a reliable isotope analysis (1 µM). In the denitrifier method, NO3- and NO2- are quantitatively converted to N2O by Pseudomonas aureofaciens (ATTC 13985). The hypobromite/azide-method is based on the chemical conversion of NH4+ to N2O by a subsequent addition of a hypobromite and azide solution. For both methods, the sample volume was adjusted to a sample size of 10 nmol of N2O. N2O was extracted from the sample vials by purging with helium and measured with a GasBench II, coupled to an isotope ratio mass spectrometer (Delta Plus, Thermo Fisher Scientific, Germany). All samples were measured with international standards. NO2- comprised on average 2 % of the combined NO2- + NO3- pool and the contribution of NO2- interference to the reported δ15N and δ18O nitrate values ... Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-16.750000,-16.316000,18.285000,18.166000) |