695 research outputs found
Physical oceanography during METEOR cruise M74/1b
No full textGaye, Birgit (2007): Hydrographic observations in the Arabian Sea during Meteor cruise 74/1b from 19. September - 4. October 2007
Grain size distribution of the thick suspensate deposits (C-events) sections of the sediment core SO130_275KL
No full textGrain size distribution of the thick suspensate deposits (C-events) sections of the sediment core SO130_275K
Grain size distribution of the silt turbidite sections (F-events) of the sediment core SO130_275KL
No full textGrain size distribution of the silt turbidite sections (F-events) of the sediment core SO130_275K
Grain size distribution of the varved sections of the sediment core SO130_275KL
No full textGrain size distribution of the varved sections of the sediment core SO130_275K
Composition of the varved sections of the sediment core SO130_275KL
No full textMethods
* Carbonate, TOC and TN: Total carbon and total nitrogen were analyzed on a Carlo Erba 1500 elemental analyzer (Milan, Italy) with a precision of 0.2% and 0.005%, respectively. Total organic carbon (TOC) was measured with the same instrument after samples were treated with 1 M hydrochloric acid (HCl) to remove inorganic carbon. Analytical precision for organic carbon was 0.02%. Carbonate carbon was calculated as the difference between total carbon and organic carbon.
* Biogenic Opal (bSiO2): Biogenic opal was determined photometrically after wet alkaline extraction of biogenic silica (bSiO2).
* Lithogenic matter: Lithogenic matter (%) was calculated by subtracting carbonate, organic matter and biogenic opal from 100%
Amino acids and hexosamines in water and pore water samples from different oceanic areas sampled between 2013 and 2016
No full textThese water and pore water samples were collected in different oceanic areas between 2013 and 2016. The samples were compiled from previous studies and used for statistical analyses in order to better understand particle dynamics and organic matter cycling in the ocean and to test and refine amino acid (AA) and hexosamine (HA) based biogeochemical indicators. Dissolved organic carbon (DOC) concentrations and total dissolved nitrogen (TDN) concentrations were determined with a POC-VCSH analyzer (Shimadzu) after removal of inorganic carbon by 2M HCl. Stable nitrogen and oxygen isotopes of nitrate (δ15N-NO3, δ18O-NO3) were analysed by the denitrifier method with a Delta Plus XP mass spectrometer. AA and HA contents and their individual monomers were analysed by liquid chromatography using a Biochrom 30 amino acid analyser after acid hydrolysis of filtered sea or pore water. Contents of AA and HA are presented in µmol/L and µg/L. AAC, AAN, HAC, HAN are presented in µg/L and as percentages of DOC (AAC/C, HAC/C) or TDN (AAN/N, HAN/N). AA and HA monomers are presented in Mol% and comprise aspartic acid (ASP), glutamic acid (Glu), threonine (Thr), serine (Ser), glycine (Gly), alanine (Ala), valine (Val), methionine (Met), isoleucine (Ile), leucine (Leu), tyrosine (Tyr), phenylalanine (Phe), β-Alanine (β-Ala), γ-aminobutyric acid (γ-Aba), histidine (His), ornithine (Orn), lysine (Lys) and arginine (Arg), glucosamine (GlcN) and galactosamine (GalN). Cysteic acid (CYA), taurine (TAU), methionine sulfoximine (MSO) and tryptophane (TRP) were determined only in the more recent samples. Data gaps indicate that measurements were not carried out or that they were not stored in the older data sets. The RI was calculated according to Jennerjahn and Ittekkot (1997; https://archimer.ifremer.fr/doc/00093/20403/) and the DI after Dauwe et al. (1999; doi:10.4319/lo.1999.44.7.1809). Definitions of biogeochemical indicators SDI, RTI, ox/anox and a detailed description of the methods can be found in Gaye et al. (2022; doi:org/10.5194/bg-19-807-2022)
Master track of SONNE cruise SO303 in 1 sec resolution (zipped, 147 MB)
No full textRaw data acquired by position sensors on board RV SONNE during expedition SO303 were processed to receive a validated master track which can be used as reference of further expedition data. During SO303 the motion reference unit Kongsberg SeaTex AS MRU-5 combined with Kongsberg SeaTex AS Seapath 320 and two GPS receivers SAAB MGL-4 were used as navigation sensors. 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
Supplementary_Material_S6 – Supplemental material for Sources of laminated sediments in the northeastern Arabian Sea off Pakistan and implications for sediment transport mechanisms during the late Holocene
No full textSupplemental material, Supplementary_Material_S6 for Sources of laminated sediments in the northeastern Arabian Sea off Pakistan and implications for sediment transport mechanisms during the late Holocene by Sven Forke, Tim Rixen, Nicole Burdanowitz, Andreas Lückge, Venkitasubramani Ramaswamy, Philipp Munz, Dorothee Wilhelms-Dick, Christoph Vogt, Sabine Kasten and Birgit Gaye in The Holocene</p
Supplementary_Material_S1-S5 – Supplemental material for Sources of laminated sediments in the northeastern Arabian Sea off Pakistan and implications for sediment transport mechanisms during the late Holocene
No full textSupplemental material, Supplementary_Material_S1-S5 for Sources of laminated sediments in the northeastern Arabian Sea off Pakistan and implications for sediment transport mechanisms during the late Holocene by Sven Forke, Tim Rixen, Nicole Burdanowitz, Andreas Lückge, Venkitasubramani Ramaswamy, Philipp Munz, Dorothee Wilhelms-Dick, Christoph Vogt, Sabine Kasten and Birgit Gaye in The Holocene</p
Composition of the thick suspensate deposits (C-events) sections of the sediment core SO130_275KL
No full textMethods
* Carbonate, TOC and TN: Total carbon and total nitrogen were analyzed on a Carlo Erba 1500 elemental analyzer (Milan, Italy) with a precision of 0.2% and 0.005%, respectively. Total organic carbon (TOC) was measured with the same instrument after samples were treated with 1 M hydrochloric acid (HCl) to remove inorganic carbon. Analytical precision for organic carbon was 0.02%. Carbonate carbon was calculated as the difference between total carbon and organic carbon.
* Lithogenic matter: Lithogenic matter (%) was calculated by subtracting carbonate, organic matter and biogenic opal from 100%
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