Rossel, Pamela E; Dittmar, Thorsten (2019): (Table S2) Contribution of formulas and elemental ratios of solid phase extracted dissolved organic matter from porewater and overlying bottom water collected during Maria S. Merian cruise MSM29 and Polarstern cruise PS85 to the Fram Strait [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.908706
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Abstract:
Contribution of different molecular categories, H/Cwa and O/Cwa elemental ratios, aromaticity index (Aimodwa) and double bond equivalents (DBEwa) and indices of degradation (Ideg) and lability (MLBwl; Ibioprod). The contribution of each molecular category is expressed as a percentage of the total formulas in each sample obtained after normalization. Molecular formulas were additionally associated with different molecular categories because less than 6% of the DOM has been identified on a molecular level. Molecular categories are defined as follow: 1) condensed aromatics, with an AImod ≥ 0.67 (Koch and Dittmar, 2006, doi:10.1002/rcm.2386) was separated in 3 different subgroups, either <15 (condensed aromatics <15C), or ≥15 (condensed aromatics ≥15C) C atoms both without heteroatoms, or containing heteroelements (condensed aromatics-CHOx); 2) polyphenols, with an AImod >0.5 but <0.67; 3) highly unsaturated formulas, with an AImod <0.5, H/C <1.5; 4) formulas of unsaturated aliphatics, with an 1.5< H/C <2, O/C <0.9, N = 0; 5) saturated fatty acids, with an H/C >2, O/C <0.9 and with either no heteroatoms (sat. fatty acids) or with heteroatoms (sat. fatty acids-CHOx); 6) formulas of sugars, with an O/C >0.9 and with either no (sugars) or with heteroatoms (sugars-CHOx) and 7)unsaturated with N (unsaturated-N) molecular formulas, with 1.5 < H/C <2, O/C < 0.9 and N >0. Additionally, polyphenols, highly unsaturated and unsaturated aliphatics were further separated in oxygen rich (-O-rich) and oxygen poor (-O-poor) if the element ratio O/C was > 0.5 or < 0.5 respectively.
Keyword(s):
Supplement to:
Rossel, Pamela E; Bienhold, Christina; Hehemann, Laura; Dittmar, Thorsten; Boetius, Antje (2020): Molecular Composition of Dissolved Organic Matter in Sediment Porewater of the Arctic Deep-Sea Observatory HAUSGARTEN (Fram Strait). Frontiers in Marine Science, 7, 428, https://doi.org/10.3389/fmars.2020.00428
Project(s):
Funding:
Seventh Framework Programme (FP7), grant/award no. 294757: Assessment of bacterial life and matter cycling in deep-sea surface sediments
Coverage:
Median Latitude: 79.011596 * Median Longitude: 2.944263 * South-bound Latitude: 78.503830 * West-bound Longitude: -5.290500 * North-bound Latitude: 79.763000 * East-bound Longitude: 7.003500
Date/Time Start: 2013-06-26T01:11:00 * Date/Time End: 2014-06-25T12:51:00
Minimum DEPTH, sediment/rock: -0.010 m * Maximum DEPTH, sediment/rock: 0.075 m
Event(s):
MSM29_424-3 (HG_II) * Latitude Start: 79.132330 * Longitude Start: 4.911500 * Latitude End: 79.132000 * Longitude End: 4.912000 * Date/Time Start: 2013-06-26T01:11:00 * Date/Time End: 2013-06-26T02:19:59 * Elevation Start: -1506.3 m * Elevation End: -1506.3 m * Location: North Greenland Sea * Campaign: MSM29 (HAUSGARTEN 2013) * Basis: Maria S. Merian * Method/Device: Multicorer with television (TVMUC) * Comment: rope length max. 1485m / FR2
MSM29_425-3 (HG_I) * Latitude: 79.133330 * Longitude: 6.092500 * Date/Time: 2013-06-26T07:10:00 * Elevation: -1253.8 m * Location: North Greenland Sea * Campaign: MSM29 (HAUSGARTEN 2013) * Basis: Maria S. Merian * Method/Device: MultiCorer (MUC) * Comment: rope length max. 1240m / FR2/2
MSM29_427-2 (KH) * Latitude Start: 79.030000 * Longitude Start: 7.003500 * Latitude End: 79.030170 * Longitude End: 7.002670 * Date/Time Start: 2013-06-27T01:02:00 * Date/Time End: 2013-06-27T01:58:59 * Elevation Start: -1280.8 m * Elevation End: -1279.4 m * Location: North Greenland Sea * Campaign: MSM29 (HAUSGARTEN 2013) * Basis: Maria S. Merian * Method/Device: Multicorer with television (TVMUC) * Comment: rope length max. 1265m / FR2
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
1804 data points