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Sedimentary pyrite sulfur isotopes track the local dynamics of the Peruvian oxygen minimum zone from ODP Hole 201-1229E
No full textSulfur cycling is ubiquitous in sedimentary environments, where it mediates organic carbon remineralization, impacting both local and global redox budgets, and leaving an imprint in pyrite sulfur isotope ratios (δ34Spyr). It is unclear to what extent stratigraphic δ34Spyr variations reflect local aspects of the depositional environment or microbial activity versus global sulfur-cycle variations. Here, we couple carbon-nitrogen-sulfur concentrations and stable isotopes to identify clear influences on δ34Spyr of local environmental changes along the Peru margin. Stratigraphically coherent glacial-interglacial δ34Spyr fluctuations (>30‰) were mediated by Oxygen Minimum Zone intensification/expansion and local enhancement of organic matter deposition. The higher resulting microbial sulfate reduction rates led to more effective drawdown and 34S-enrichment of residual porewater sulfate and sulfide produced from it, some of which is preserved in pyrite. We identify organic carbon loading as a major influence on δ34Spyr, adding to the growing body of evidence highlighting the local controls on these records
Master tracks in different resolutions of ELISABETH MANN BORGESE cruise EMB341, Rostock - Rostock, 2024-05-27 - 2024-06-01
No full textRaw data acquired by position sensors on board RV Elisabeth Mann Borgese during expedition EMB341 were processed to receive a validated master track which can be used as reference of further expedition data. During EMB341 data from the motion reference unit exail Phins Gen.3, the Trimble SPS356 GPS receiver, the Furuno GP-170 and the Furuno GP-150 GPS receiver were used to calculate the mastertrack. Data were downloaded from DAVIS SHIP data base (https://dship.bsh.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track
Master track of ELISABETH MANN BORGESE cruise EMB340 in 1 sec resolution (zipped, 73 MB)
No full textRaw data acquired by position sensors on board RV Elisabeth Mann Borgese during expedition EMB340 were processed to receive a validated master track which can be used as reference of further expedition data. During EMB340 data from the motion reference unit exail Phins Gen.3, the Trimble SPS356 GPS receiver, the Furuno GP-170 and the Furuno GP-150 GPS receiver were used to calculate the mastertrack. Data were downloaded from DAVIS SHIP data base (https://dship.bsh.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track
Master track of ELISABETH MANN BORGESE cruise EMB338 in 1 sec resolution (zipped, 15 MB)
No full textRaw data acquired by position sensors on board RV Elisabeth Mann Borgese during expedition EMB338 were processed to receive a validated master track which can be used as reference of further expedition data. During EMB338 data from the motion reference unit exail Phins Gen.3, the Trimble SPS356 GPS receiver, the Furuno GP-170 and the Furuno GP-150 GPS receiver were used to calculate the mastertrack. Data were downloaded from DAVIS SHIP data base (https://dship.bsh.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track
Master track of ELISABETH MANN BORGESE cruise EMB337 in 1 sec resolution (zipped, 54 MB)
No full textRaw data acquired by position sensors on board RV Elisabeth Mann Borgese during expedition EMB337 were processed to receive a validated master track which can be used as reference of further expedition data. During EMB337 data from the motion reference unit exail Phins Gen.3, the Trimble SPS356 GPS receiver, the Furuno GP-170 and the Furuno GP-150 GPS receiver were used to calculate the mastertrack. Data were downloaded from DAVIS SHIP data base (https://dship.bsh.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track
Master tracks in different resolutions of ELISABETH MANN BORGESE cruise EMB335, Rostock - Rostock, 2024-02-26 - 2024-03-01
No full textRaw data acquired by position sensors on board RV Elisabeth Mann Borgese during expedition EMB335 were processed to receive a validated master track which can be used as reference of further expedition data. During EMB335 data from the motion reference unit exail Phins Gen.3, the Trimble SPS356 GPS receiver, the Furuno GP-170 and the Furuno GP-150 GPS receiver were used to calculate the mastertrack. Data were downloaded from DAVIS SHIP data base (https://dship.bsh.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track
