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  • 1
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    Carboxylic acids, alkanols and stable isotope values (δ13C and δ15N) of sub-stomach oil deposits of snow petrels (Pagodroma nivea) (2022)
    PANGAEA
    Details
    Publication Date: 2023-10-28
    Description: The dataset comprises data on the lipid composition (carboxylic acids and alkanols) and stable isotope values (δ13C and δ15N) obtained from fresh stomach oils and sub-stomach oil deposits of snow petrels (Pagodroma nivea). The samples were collected in different un-glaciated regions of East Antarctica (Dronning Maud Land, Mac. Robertson Land, Prince Charles Mountains and Windmill Islands). The stomach oils and sub-fossil stomach oil deposits were analyzed to investigate the paleodiet of the birds and to relate information of paleodiet to past environmental conditions. The alkanoic acids and alkanols were analysed from total lipid extracts by capillary gas chromatography with GC-FID (Gas chromatograph with Flame ionization detector) and GC-MS (single quadrupole mass spectrometer coupled with gas chromatograph). Total lipid extracts were analysed for the δ13C isotopic composition. The un-soluble residues, retained after lipid extraction, was analysed for δ13C and δ15N isotopic composition. This work was funded by the Deutsche Forschungsgemeinschaft (DFG) in the framework of the priority program “Antarctic Research with comparative investigations in Arctic ice areas” (grants BE 4764/5-1 and BE 4764/6-1).
    Keywords: (11E)-Octadec-11-enoic acid; (11Z)-Docos-11-enoic acid; (11Z)-Icos-11-enoic acid; (13Z)-Docos-13-enoic acid; (13Z)-Icos-13-enoic acid; (9Z)-Hexadec-9-enoic acid; (9Z)-Octadec-9-enoic acid; 1/3; 1/5; 1/6; 1/8; 12-methyl-Tetradecanoic acid; 13-methyl-Tetradecanoic acid; 14-methyl-Pentadecanoic acid; 15-methyl-Hexadecanoic acid; ANT-Land_2018_Mumiyo; AWI Antarctic Land Expedition; Bechervaise island; Behcervaise Island; Behcervaise Island,; Campaign; Carbon, total; Carbon/Nitrogen ratio; carboxlic acids; Core; Dallmann-Berge/SW; Dall-SW-1830; DATE/TIME; Decanedioic acid; DEPTH, sediment/rock; Docosan-1-ol; Docosanoic acid; Docosen-1-ol; Dodecanedioic acid; Dodecanoic acid; East Antarctica; Eicosan-1-ol; Eicosen-1-ol; ELEVATION; Event label; Framnes Mountains,Masson Range; Framnes Mountains, Masson Range; GC-FID, analysis of alkanoic acids as fatty acid methyl ester derivates; GC-FID, analysis of n-alkanols as TMS-derivates; GeoMaud95/96; Greenall Glacier; Heimefrontfjella, Scharffenbergbotnen; Heimefrontfjella97/98; Heptadecanoic acid; Heptanedioic acid; Hexadecan-1-ol; Hexadecanoic acid; Icosanoic acid; LATITUDE; Location; LONGITUDE; M2Greenall; Masson Range, Mt Ward; MAW-FM01; MAW-FM02; MAW-FM03; MAW-FM04; MAW-FM05; MAW-FM-06; MAW-FM-07; MAW-FM-11; MAW-FM-12; MAW-FM-14; MAW-FM-15; MAW-MD-02; MAW-MD-03; MAW-MD-05; MAW-MD-06; MULT; Multiple investigations; Mumiyo_1/3; Mumiyo_1/5; Mumiyo_1/6; Mumiyo_1/8; Mumiyo2/4; Nitrogen, total; Nonadecanoic acid; Nonanedioic acid; Octadecadienoic acid; Octadecan-1-ol; Octadecanoic acid; Octadecen-1-ol; Octanedioic acid; pagodroma nivea; paleodiet; PCMEGA; Pentadecan-1-ol; Pentadecanoic acid; Petermann Range; Prince Charles Mountains Expeditin of Germany and Australia; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; PRM-10; PRM-4; PRM-6; Rumdodle range, Fearn Hill; Sample ID; Sample type; Sampling on land; SB-XI; Scharffenbergbotnen, Heimefrontfjella, Antarctic; SPP1158; stomach oil deposits; Tetracosanoic acid; Tetracosenoic acid; Tetradecan-1-ol; Tetradecanoic acid; Tridecanedioic acid; Tridecanoic acid; Undecanedioic acid; Undecanoic acid; western Dronning Maud Land; Windmill islands; WM-FM01; WM-FM02; WM-FM04; δ13C; δ15N
    Type: Dataset
    Format: text/tab-separated-values, 3072 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
    facet.materialart.
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    Carboxylic acids, alkanols and stable isotope values (δ13C and δ15N) of fresh stomach oils and sub-stomach oil deposits of snow petrels (Pagodroma nivea) (2022)
    PANGAEA
    Details
    Publication Date: 2023-10-28
    Description: The dataset comprises data on the lipid composition (carboxylic acids and alkanols) and stable isotope values (δ13C and δ15N) obtained from fresh stomach oils and sub-stomach oil deposits of snow petrels (Pagodroma nivea). The samples were collected in different un-glaciated regions of East Antarctica (Dronning Maud Land, Mac. Robertson Land, Prince Charles Mountains and Windmill Islands). The stomach oils and sub-fossil stomach oil deposits were analyzed to investigate the paleodiet of the birds and to relate information of paleodiet to past environmental conditions. The alkanoic acids and alkanols were analysed from total lipid extracts by capillary gas chromatography with GC-FID (Gas chromatograph with Flame ionization detector) and GC-MS (single quadrupole mass spectrometer coupled with gas chromatograph). Total lipid extracts were analysed for the δ13C isotopic composition. The un-soluble residues, retained after lipid extraction, was analysed for δ13C and δ15N isotopic composition. This work was funded by the Deutsche Forschungsgemeinschaft (DFG) in the framework of the priority program "Antarctic Research with comparative investigations in Arctic ice areas" (grants BE 4764/5-1 and BE 4764/6-1).
    Keywords: carboxlic acids; East Antarctica; pagodroma nivea; paleodiet; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SPP1158; stomach oil deposits; δ13C; δ15N
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
    facet.materialart.
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    Carboxylic acids, alkanols and stable isotope values (δ13C and δ15N) of fresh stomach oil deposits of snow petrels (Pagodroma nivea) (2022)
    PANGAEA
    Details
    Publication Date: 2023-10-28
    Description: The dataset comprises data on the lipid composition (carboxylic acids and alkanols) and stable isotope values (δ13C and δ15N) obtained from fresh stomach oils and sub-stomach oil deposits of snow petrels (Pagodroma nivea). The samples were collected in different un-glaciated regions of East Antarctica (Dronning Maud Land, Mac. Robertson Land, Prince Charles Mountains and Windmill Islands). The stomach oils and sub-fossil stomach oil deposits were analyzed to investigate the paleodiet of the birds and to relate information of paleodiet to past environmental conditions. The alkanoic acids and alkanols were analysed from total lipid extracts by capillary gas chromatography with GC-FID (Gas chromatograph with Flame ionization detector) and GC-MS (single quadrupole mass spectrometer coupled with gas chromatograph). Total lipid extracts were analysed for the δ13C isotopic composition. The un-soluble residues, retained after lipid extraction, was analysed for δ13C and δ15N isotopic composition. This work was funded by the Deutsche Forschungsgemeinschaft (DFG) in the framework of the priority program “Antarctic Research with comparative investigations in Arctic ice areas” (grants BE 4764/5-1 and BE 4764/6-1).
    Keywords: (11E)-Octadec-11-enoic acid; (11Z)-Docos-11-enoic acid; (11Z)-Icos-11-enoic acid; (13Z)-Docos-13-enoic acid; (13Z)-Icos-13-enoic acid; (9Z)-Hexadec-9-enoic acid; (9Z)-Octadec-9-enoic acid; Bechervaise Island, Mawson; Campaign; carboxlic acids; Core; DATE/TIME; Docosan-1-ol; Docosanoic acid; Docosen-1-ol; Dodecanoic acid; East Antarctica; Eicosan-1-ol; Eicosen-1-ol; ELEVATION; Event label; Framnes Mountains, Fearn Hill; GC-FID, analysis of alkanoic acids as fatty acid methyl ester derivates; Hexadecan-1-ol; Hexadecanoic acid; Hexadecen-1-ol; Icosanoic acid; LATITUDE; Location; LONGITUDE; MAW-FS01; MAW-FS02; MAW-FS03; MAW-FS-04; MAW-FS-05; Octadecan-1-ol; Octadecanoic acid; Octadecen-1-ol; pagodroma nivea; paleodiet; Pentadecan-1-ol; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; Sample ID; Sample type; SPP1158; stomach oil deposits; Tetracosanoic acid; Tetracosenoic acid; Tetradecan-1-ol; Tetradecanoic acid; Windmill Islands, Reeves Hill, Casey Station; WM-FS01; WM-FS02; WM-FS03; WM-FS04; WM-FS05; WM-FS06; δ13C; δ15N
    Type: Dataset
    Format: text/tab-separated-values, 372 data points
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    DATA PANGAEA
  • 4
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    Monthly mean Lagrangian basal melt rates at Ekström Ice Shelf, Antarctica between 2020 and 2022 (2024)
    PANGAEA
    Details
    Publication Date: 2024-04-12
    Description: We estimated monthly mean basal melt rates in the Lagrangian frame from autonomous phase-sensitive radar (ApRES) measurements at the center of Ekström Ice Shelf, Antarctica (70.82°S, 8.73°W) between April 2020 and December 2022. The data we recorded with a measurement interval of one hour. Basal melt rates are based on the analysis of firn densification, strain thinning, and the change in ice thickness from the determination of vertical displacements. We calculated the mean basal melt rate as well as the standard deviation, and maximum for each month.
    Keywords: Antarctica; ANT-Land_2021_MIMO-EIS; ANT-Land_2022_MIMO-EIS; ANT-Land_2023_MIMO-EIS; ApRES; Autonomous phase-sensitive radio-echo sounder; Basal melt rates; DATE/TIME; EIS-8_ApRES_2020; EIS-8_ApRES_2021; EIS-8_ApRES_2022; Ekström; Ekström Ice Shelf; ice shelf basal melting; Melt rate; Melt rate, maximum; Melt rate, standard deviation; Monitoring Melt where Ice Meets Ocean; NEUMAYER III
    Type: Dataset
    Format: text/tab-separated-values, 99 data points
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  • 5
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    Ionospheric Plasma Density Oscillation Related to EMIC Pc1 Waves (2020)
    American Geophysical Union
    Details
    Publication Date: 2020-08-03
    Print ISSN: 0094-8276
    Electronic ISSN: 1944-8007
    Topics: Geosciences , Physics
    Published by American Geophysical Union
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    PAPER CURRENT
  • 6
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    Interaction between a hotspot and a fracture zone: The crustal structure of Walvis Ridge at 6° E (2017)
    Elsevier
    Details
    Publication Date: 2017-10-01
    Print ISSN: 0040-1951
    Electronic ISSN: 1879-3266
    Topics: Geosciences , Physics
    Published by Elsevier
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    PAPER CURRENT
  • 7
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    The wide-angle seismic image of a complex rifted margin, offshore North Namibia: Implications for the tectonics of continental breakup (2017)
    Elsevier
    Details
    Publication Date: 2017-10-01
    Print ISSN: 0040-1951
    Electronic ISSN: 1879-3266
    Topics: Geosciences , Physics
    Published by Elsevier
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    PAPER CURRENT
  • 8
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    Interaction between a hotspot and a fracture zone: The crustal structure of Walvis Ridge at 6° E (2017)
    Elsevier
    In:  Tectonophysics, 716 . pp. 108-120.
    Details
    Publication Date: 2020-02-06
    Description: Highlights • Late stage volcanism covers old oceanic crust north of the Florianopolis Fracture Zone. • No influence of fracture zone on formation of Walvis Ridge at 6° E. • Walvis Ridge at 6° E erupted in deep water environment. Abstract The Walvis Ridge is one of the major hotspot trails in the South Atlantic and a classical example for volcanic island chains. Two models compete about the origin of the ridge: It is either the result of a deep mantle plume or active fracture zones above mantle inhomogeneities. Among other things crustal information is needed to constrain the models. Here, we provide such constraint with a 480 km long P-wave velocity model of the deep crustal structure of the eastern Walvis Ridge at 6° E. According to our data the Walvis Ridge stretches across the Florianopolis Fracture Zone into the Angola Basin. Here, we observe a basement high and thick basaltic layers covering the oceanic crust and the fracture zone. We found two crustal roots along the profile: one is located beneath the ridge crest, the other one beneath the northern basement high in the Angola Basin. The crustal thickness reaches 18 km and 12 km and the lower crustal velocities are 7.2 km/s and 7.4 km/s, respectively. The bathymetric expression of the ridge along the profile is less pronounced than closer to shore, which is mainly attributable to the absence of a thick layer of volcanic debris, rather than to reduced crustal thickness below the basement surface. Therefore, this part of the ridge was never or only briefly subaerially exposed. The crustal structure suggests that the ridge and the fracture zone formed independently of each other. The oceanic crust north of the fracture zone, which is buried underneath the basalt layer, is younger than the reconstructed age of hotspot volcanism of the Walvis Ridge. We interpret these structures north of the fracture zone to be at least partly a product of late stage volcanism.
    Type: Article , PeerReviewed
    Format: text
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  • 9
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    South Atlantic opening: A plume-induced breakup? (2015)
    GSA, Geological Society of America
    In:  Geology, 43 (10). pp. 931-934.
    Details
    Publication Date: 2017-05-17
    Description: Upwelling hot mantle plumes are thought to disintegrate continental lithosphere and are considered to be drivers of active continental breakup. The formation of the Walvis Ridge during the opening of the South Atlantic is related to a putative plume-induced breakup. We investigated the crustal structure of the Walvis Ridge (southeast Atlantic Ocean) at its intersection with the continental margin and searched for anomalies related to the possible plume head. The overall structure we identify suggests that no broad plume head existed during opening of the South Atlantic and anomalous mantle melting occurred only locally. We therefore question the importance of a plume head as a driver of continental breakup and further speculate that the hotspot was present before the rifting, leaving a track of kimberlites in the African craton.
    Type: Article , PeerReviewed
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  • 10
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    Deep crustal structure of the Walvis Ridge at the junction with the Namibian coast (2013)
    In:  [Talk] In: EGU General Assembly 2013, 07.-12.04.2013, Vienna, Austria .
    Details
    Publication Date: 2013-04-09
    Type: Conference or Workshop Item , NonPeerReviewed
    Format: text
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