cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.894682
title: Protactinium, thorium and uranium activities and ratios in sediment cores MD09-3257 and GeoB3910-2

description: A Pa/Th value of 0.058 ± 0.014 was measured by Burckel et al. (2015) at 360 cm, that we discarded as an outlier with respect to the replicate measured at 360 cm and surrounding values.
DOI: 10.1594/pangaea.895102
title: Seabed photographs taken along OFOS profile PS114_33-3 during POLARSTERN cruise PS114
DOI: 10.1594/pangaea.894777
title: Pore-water manganese and nitrate data of sediment cores retrieved during R/V SONNE cruise SO239 in the APEI3 area
DOI: 10.1594/pangaea.894782
title: Ex-situ oxygen data of sediment cores retrieved during R/V SONNE cruise SO239 in the APEI3 area
DOI: 10.1594/pangaea.894909
title: Ship based cetacean survey Southern Ocean 2011/2012

description: Distance sampling survey for cetaceans in the Southern Ocean conducted on board of Polarstern during the austral summer 2011/2012. Effort related sighting data were collected en-route during a dedicated survey.
DOI: 10.1594/pangaea.894910
title: Ship based cetacean survey Southern Ocean 2010/2011

description: Distance sampling survey for cetaceans in the Southern Ocean conducted on board of Polarstern during the austral summer 2010/2011. Effort related sighting data were collected en-route during a dedicated survey.
DOI: 10.1594/pangaea.894911
title: Ship based cetacean survey Southern Ocean 2008/2009

description: Distance sampling survey for cetaceans in the Southern Ocean conducted on board of Polarstern during the austral summer 2008/2009. Effort related sighting data were collected en-route during a dedicated survey.
DOI: 10.1594/pangaea.895103
title: Seabed photographs taken along OFOS profile PS114_30-1 during POLARSTERN cruise PS114
DOI: 10.1594/pangaea.895104
title: Seabed photographs taken along OFOS profile PS114_44-1 during POLARSTERN cruise PS114
DOI: 10.1594/pangaea.895308
title: POS498 raw data of ELAC SB3050 multibeam echosounder (bathymetry, beam time series & water column data)

description: Multibeam echosounder (MBES) data recorded during RV POSEIDON cruise POS498 between 18.04.2016 and 01.05.2016 off the south coast of Turkey in the Anaximander Mountains. The cruise aimed to recover observatories with the help of the Remotely Operated Vehicle (ROV) MARUM‐SQUID 2000, while the second main objective of the cruise was to recover sediments to study the thermal structure as well as the temporal evolution of the mud volcanoes. CI Citation: Paul Wintersteller (seafloor-imaging@marum.de) as responsible party for bathymetry raw data ingest and approval. Description of the data source: During the RV POSEIDON cruise POS498 the ELAC SB3050 multibeam echo sounder with a nominal sounding frequency of 50 kHz was utilized. 384 beams with a 1.5°(TX)/2°(RX) footprint are formed for each ping while the seafloor is detected using amplitude and phase information for each beam sounding. For further information consult http://www.mdsys.co.kr/down/ELAC/SB_3050.pdf. During POS498 the swath angle was set mostly between 90 and 70° with a survey speed of 6 knots. The ELAC SB3050 worked reliable in spite of working at the lower end of its depth range. Problems during the acquisition only occurred during bad weather conditions and a malfunction of the integrated navigation system (F180 unit) by which the heading of the ship in the data diverged from the true heading, which resulted in misplaced beams. Responsible person for hydroacoustic during this cruise / PI: David Voelker (dvoelker@marum.de). Chief Scientist: H. Sahling (hsahling@marum.de) CR: http://oceanrep.geomar.de/33307/ CSR: http://www.bsh.de/aktdat/dod/fahrtergebnis/2016/20160082.htm A special thanks goes to the watch keeper during POS498: Markus Loher
DOI: 10.1594/pangaea.894924
title: Aerial cetacean survey Southern Ocean 2011/2012

description: Aerial distance sampling survey for cetaceans in the Southern Ocean conducted on board Polarstern during the Antarctic Expedition PS79 (ANT-XXVIII/2) during austral summer 2011/2012. Effort related sighting data were collected during a dedicated survey following an ad-hoc sampling design.
DOI: 10.1594/pangaea.894934
title: Aerial cetacean survey Southern Ocean 2010/2011

description: Aerial distance sampling survey for cetaceans in the Southern Ocean conducted on board Polarstern during the Antarctic Expedition PS77 (ANT-XXVII/2) during austral summer 2010/2011. Effort related sighting data were collected during a dedicated survey following an ad-hoc sampling design.
DOI: 10.1594/pangaea.894936
title: Aerial cetacean survey Southern Ocean 2008/2009

description: Aerial distance sampling survey for cetaceans in the Southern Ocean conducted on board Polarstern during the Antarctic Expedition PS73 (ANT-XXV/2) during austral summer 2008/2009. Effort related sighting data were collected during a dedicated survey following an ad-hoc sampling design.
DOI: 10.1594/pangaea.894937
title: Aerial cetacean survey Southern Ocean 2006/2007

description: Aerial distance sampling survey for cetaceans in the Southern Ocean conducted on board Polarstern during the Antarctic Expedition PS69 (ANT-XXIII/8) during austral summer 2006/2007. Effort related sighting data were collected during a dedicated survey following an ad-hoc sampling design.
DOI: 10.1594/pangaea.894938
title: Aerial cetacean survey Southern Ocean 2014/2015

description: Aerial distance sampling survey for cetaceans in the Southern Ocean conducted on board Polarstern during the Antarctic Expedition PS89 (ANT-XXX/2) during austral summer 2014/2015. Effort related sighting data were collected during a dedicated survey following an ad-hoc sampling design.
DOI: 10.1594/pangaea.895030
title: Stable oxygen isotope records of sediment core GeoB16202-2
DOI: 10.1594/pangaea.895032
title: Monte Carlo ensemble Delta δ¹⁸O of planktic foraminifera species in sediment core GeoB16202-2
DOI: 10.1594/pangaea.895535
title: Planktic and benthic stable oxygen and carbon isotope, IRD, planktic foraminifera data and sand fraction content of sediment core PS1904-2

description: Sediment core PS1904 reveals continuous records of planktic and benthic foraminiferal stable isotopes (d18O/d13C) from the north-eastern Greenland continental margin. The data show good comparability with other records from the Nordic Seas, allowing the stratigraphic range of PS1904 to be dated to Marine Isotope Stage (MIS) 6. Focusing on MIS 5 reveals light d18O values during MIS 5a compared to the last interglacial peak (MIS 5e) which indicates that surface and bottom water layers were strongly affected by freshwater during the former event. We present two possible scenarios explaining the origin and routing of the freshwater: (i) drainage of a Eurasian proglacial lake coupled with the collapse of the Kara Sea Ice Sheet at the MIS 5b/a boundary, and (ii) destabilization and melting of the nearby Greenland Ice Sheet. Although both scenarios could have acted simultaneously, sediment records from the Eurasian sector of the Arctic Ocean hint at the proglacial lake system in north-western Siberia as the largest freshwater source. Regardless of the actual source, the freshwater lowered the surface ocean salinity causing water column stratification and sea ice expansion. Increased sea-ice abundance led to a higher albedo and probably contributed to the cooling and global ice sheet growth that occurred subsequently during MIS 4.
description: Supplement to: Telesiński, Maciej Mateusz; Bauch, Henning A; Spielhagen, Robert F (2018): Causes and consequences of Arctic freshwater routing into the Nordic Seas during late Marine Isotope Stage 5. Journal of Quaternary Science, 33(7), 794-803
DOI: 10.1594/pangaea.895554
title: Chlorophyll pigment concentrations of Elpidia heckeri gut content collected from Agassiz trawls during POLARSTERN cruise ARK-XXVII/3 (PS80, IceArc)

description: Chlorophyll pigments were extracted in acetone (90%), after addition of glass beads and grinding of each sample in a cell mill (Boetius and Damm 1998, doi:10.1016/S0967-0637(97)00052-6). After centrifugation, the concentration of chlorophyll a was determined in the supernatant by fluorometric measurement with a Turner fluorometer.
DOI: 10.1594/pangaea.895565
title: Processed multinet CTD data from METEOR cruise M133

description: Research expedition M133 took place from December 15th, 2016 (Cape Town, South Africa) to January 13th, 2017 (Port Stanley, Falkland Islands). CTD data for 19 stations along the cruise track were recorded using a Sea & Sun Technology CTD90M (SN 979) down to depths of 700m. The CTD was equipped with the following sensors: Temperature sensor Pt100 model 1509 (Thermal Developments International), Conductivity sensor 7-pole platinum coated electrode cell in quartz glass (Sea & Sun Technology), Seapoint Chlorophyll Fluorometer (Seapoint) and single rod electrode ph sensor (AMT Analysenmesstechnik GmbH). The data files contain the data for temperature, salinity, density and chlorophyll a concentration and pH; as raw data and processed and flagged according to the recommendations for real-time data processing of EuroGOOS and GTSPP, as well as the outlier detection method CoTeDe (https://github.com/castelao/CoTeDe). Due to sensor malfunction/deterioration the pH data for the last four stations were excluded. Biogeographic regions are determined according to Spalding et al. (2012). TEOS-10 unit conversions have been performed with the GSW Oceanographic Toolbox (McDougall and Barker, 2011).
DOI: 10.1594/pangaea.895566
title: Sea surface temperature of sediment core GeoB3606-1

description: Although productivity variations in coastal upwelling areas are mostly attributed to changes in wind strength, productivity dynamics in the Benguela Upwelling System (BUS) is less straightforward due to its complex atmospheric and hydrographic settings. In view of these settings, past productivity variations in the BUS can be better investigated with downcore sediments representing different productivity regimes. In this study, two sediment cores retrieved at ca. 25°–26°S in the BUS and representing different productivity regimes were studied. By using micropaleontological, geochemical and temperature proxies measured on core MD96-2098, recovered at 2910 m water depth in the bathypelagic zone at 26°S off Namibia, variations of filament front location, productivity and temperature in the central BUS over the past 70 kyr were reconstructed. The comparison with newly-generated alkenone-based sea-surface temperature (SST) and previously obtained data at site GeoB3606-1 (~ 25°S; ca. 50 km shoreward from MD96-2098) allowed the recognition of four main phases: (1) upwelling front above the mid slope (70 kyr–44 kyr), (2) seaward displacement of the upwelling front beyond the mid slope (44 kyr–31 kyr), (3) main upwelling front over the hemipelagial (31 kyr–19 kyr), and (4) shoreward contraction of the upwelling filament, and decreased upwelling strength over most of the uppermost bathypelagic (19 kyr–6 kyr). The latitudinal migration of the Southern Hemisphere westerlies and the consequent contractions and expansions of the subpolar gyre played a significant role in millennial and submillennial variability of SST off Namibia. The strength of the southeasterly trade winds, rapid sea-level variations and the equatorward leakage of Antarctic silicate might have acted as amplifiers. Although late Quaternary variations of productivity and upwelling intensity in eastern boundary current systems are thought to be primarily linked to the variability in wind stress, this multi-parameter reconstruction shows that interplaying mechanisms defined the temporal variation pattern of the filament front migrations and the diatom production off Namibia during the past 70 kyr.
description: Supplement to: Romero, Oscar E; Crosta, Xavier; Kim, Jung-Hyun; Pichevin, Laetitia; Crespin, Julien (2015): Rapid longitudinal migrations of the filament front off Namibia (SE Atlantic) during the past 70 kyr. Global and Planetary Change, 125, 1-12
DOI: 10.1594/pangaea.895578
title: Continuous thermosalinograph oceanography along POLARSTERN cruise track PS110 (ANT-XXXIII/1)
DOI: 10.1594/pangaea.895579
title: Continuous thermosalinograph oceanography along POLARSTERN cruise track PS111 (ANT-XXXIII/2)
DOI: 10.1594/pangaea.894794
title: Solid-phase radionuclide data of sediment core SO239_199-1 retrieved during R/V SONNE cruise SO239 in the APEI3 area
DOI: 10.1594/pangaea.894818
title: Pore-water manganese and nitrate data of sediment cores retrieved during R/V SONNE cruise SO239 in the BGR area
DOI: 10.1594/pangaea.894819
title: Pore-water manganese and nitrate data of sediment cores retrieved during R/V SONNE cruise SO239 in the GSR area
DOI: 10.1594/pangaea.894824
title: Pore-water manganese and nitrate data of sediment cores retrieved during R/V SONNE cruise SO239 in the IFREMER-1 area
DOI: 10.1594/pangaea.894832
title: Pore-water manganese and nitrate data of sediment cores retrieved during R/V SONNE cruise SO239 in the IFREMER-2 area
DOI: 10.1594/pangaea.895808
title: Underway CTD measurements during POLARSTERN cruise PS111

description: In January 2018, RV Polarstern crossed the Maud Rise region during the transit from Capetown, South Africa to the Neumayer III research station as part of the PS111-expedition. A few months before the expedition, the region featured the strongest occurrence of the "Maud Rise polynya" in four decades. During the crossing toward Neumayer III, CTD measurements were carried out by use of an underwayCTD system, which allows hydrographic sampling while the ship is in transit. A total of 23 stations between 60°S and 69°S were occupied to a depth of ~600 m.
description: The underway CTD is a self-contained free-falling probe measuring temperature, conductivity, depth while the ship is transiting. The conductivity sensor is unpumped, and has a response time that is different from that of the temperature sensor. Therefore, converting conductivity into salinity is not straightforward. We followed the recommendation of the manufacturer and computed salinity by use of the Seabird processing software as outlined in the document “UCTD salinity”.The processed data file includes temperature, pressure, and salinity. Please note that the upper 20 m were removed because the quality of the measurements cannot be guaranteed due to the 11m draft of the vessel and the associated turbulent overturning behind the ship.Additional information about the underway CTD can be found in Rudnick, D. L., and J. Klinke, 2007.The raw data are also included and can be used to reprocess the salinity data if desired.
DOI: 10.1594/pangaea.895817
title: Gonad maturity stages of Microcalanus spp. in the Southern Ocean

description: Females were stained in a Borax carmin solution for the exam- ination of the gonad maturation. Four different developmental stag- es of gonads were determined according to Corkett and McLaren (1978) - stage 1: unripe; stage 2: semiripe; stage 3: ripe; stage 4: spent. For further information see Schnack-Schiel and Mizdalski (1994).
DOI: 10.1594/pangaea.895818
title: Gonad maturity stages of Ctenocalanus citer in the Southern Ocean

description: Females were stained in a Borax carmin solution for the exam- ination of the gonad maturation. Four different developmental stag- es of gonads were determined according to Corkett and McLaren (1978) - stage 1: unripe; stage 2: semiripe; stage 3: ripe; stage 4: spent. For further information see Schnack-Schiel and Mizdalski (1995).
DOI: 10.1594/pangaea.895819
title: Gonad maturity stages of Stephos longipes in the Southern Ocean

description: Females were stained in a Borax carmin solution for the exam- ination of the gonad maturation. Four different developmental stag- es of gonads were determined according to Corkett and McLaren (1978) - stage 1: unripe; stage 2: semiripe; stage 3: ripe; stage 4: spent. For further information see Schnack-Schiel et al. (1995).
DOI: 10.1594/pangaea.895821
title: Gonad maturity stages of Metridia curticauda in the Southern Ocean

description: Females were stained in a Borax carmin solution for the exam- ination of the gonad maturation. Four different developmental stag- es of gonads were determined according to Corkett and McLaren (1978) - stage 1: unripe; stage 2: semiripe; stage 3: ripe; stage 4: spent.
DOI: 10.1594/pangaea.895825
title: Documentation of sediment core PS2059-1
DOI: 10.1594/pangaea.895834
title: Documentation of sediment core PS2004-3
DOI: 10.1594/pangaea.895836
title: Documentation of sediment core PS2005-2
DOI: 10.1594/pangaea.895837
title: Documentation of sediment core PS2006-1
DOI: 10.1594/pangaea.895838
title: Documentation of sediment core PS2007-2
DOI: 10.1594/pangaea.895839
title: Documentation of sediment core PS2015-1
DOI: 10.1594/pangaea.895840
title: Documentation of sediment core PS2017-2
DOI: 10.1594/pangaea.895841
title: Documentation of sediment core PS2018-1
DOI: 10.1594/pangaea.895842
title: Documentation of sediment core PS2019-2
DOI: 10.1594/pangaea.895843
title: Documentation of sediment core PS2022-4
DOI: 10.1594/pangaea.895844
title: Documentation of sediment core PS2023-1
DOI: 10.1594/pangaea.895845
title: Documentation of sediment core PS2024-1
DOI: 10.1594/pangaea.895336
title: POS499 raw data of ELAC SB3050 multibeam echosounder (bathymetry, beam time series & water column data)

description: Multibeam echosounder (MBES) data recorded during RV POSEIDON cruise POS499 between 04.05.2016 and 22.05.2016 in the Mediterranean Sea. The aim of POS499 was to investigate several mud volcanoes from four regional areas of the Calabrian Arc with the MARUM AUV SEAL. CI Citation: Paul Wintersteller (seafloor-imaging@marum.de) as responsible party for bathymetry raw data ingest and approval. Detailed description of the data source: During the RV POSEIDON cruise POS499 the ELAC SB3050 multibeam echo sounder with a nominal sounding frequency of 50 kHz was utilized. 384 beams with an acoustical footprint of 1.5°(TX)/2°(RX) are formed for each ping. For further information consult http://www.mdsys.co.kr/down/ELAC/SB_3050.pdf. During the POS499 cruise the swath width has been set to AUTO mode and was commonly observed at around 80°. This given swath width refers to a coverage of about 1.6 times the water ‐depth and reduces the max. number of beams collected per ping to less than 240. Most of the time the multi‐ping mode has been used with a receiver reception gain value of 45dB. The recorded bathymetry covers in total 880 km and the mapped area is based on the bathymetry results from the M111 & M112 cruises. Responsible person for hydroacoustic during this cruise / PI: Paul Wintersteller (pwintersteller@marum.de)Chief Scientist: Gerhard Bohrmann (gbohrmann@marum.de) CR: https://elib.suub.uni-bremen.de/edocs/00105556-1.pdf CSR: https://www2.bsh.de/aktdat/dod/fahrtergebnis/2016/20160083.htm A special thanks goes to the watch keeper during POS499: A. K. Bachmann, S. Ceramicola, O. Candoni
DOI: 10.1594/pangaea.895846
title: Documentation of sediment core PS2024-3
DOI: 10.1594/pangaea.895847
title: Documentation of sediment core PS2025-1
DOI: 10.1594/pangaea.895397
title: Organic UV stabilizers and UV filters in the sediment of European North and Baltic Seas in 2016/2017

description: UV absorbing compounds are of emerging concern due to their large production volumes, their persistence or pseudo-persistence, and their potential adverse effects. This is the first study investigating the environmental occurrence and potential hazard of organic UV stabilizers and UV filters in the North and Baltic Sea surface sediments, including the connecting Skagerrak and Kattegat straits. In total, nineteen substances were identified over the entire study area, including the rarely studied compounds ethylhexyl triazone (EHT) and bisoctrizole (UV-360). Octocrylene (OC) was the predominant compound in this study with regard to detection frequency (79%) and concentrations (up to 9.7 ng/g dw). OC accounted for more than 65% of UV stabilizer contamination in the German Bight. The triazine derivative EHT was quantified in the Rhine-Meuse-Delta and the German Bight in concentrations up to 2.0 ng/g dw. In the Baltic Sea, benzotriazole UV stabilizers accounted for 60% of the contamination, with UV-360 as the main substance. The estimated environmental hazard quotients indicated a negligible impact on benthic and sediment-dwelling organisms in the North and Baltic Seas. Region-specific contamination pattern and riverine influences were revealed. The results suggest that both direct and indirect sources contribute to the UV stabilizer and UV filter contamination in the study area.
description: Supplement to: Apel, Christina; Joerss, Hanna; Ebinghaus, Ralf (2018): Environmental occurrence and hazard of organic UV stabilizers and UV filters in the sediment of European North and Baltic Seas. Chemosphere, 212, 254-261
DOI: 10.1594/pangaea.895426
title: Processed multinet CTD data from METEOR cruise M124

description: Research expedition M124 took place from February 29th to March 18th 2016, saling from Cape Town, South Africa to Rio de Janeiro, Brazil. CTD data for 16 stations with a total of 52 individual casts along the cruise track were recorded using a Sea & Sun Technology CTD90M (SN 979), attached to a HydroBios Multi-Plankton-Sampler, down depths of 700m. The CTD was equipped with sensors for temperature (Pt100 model 1509, Thermal Developments International), conductivity (7-pole platinum coated electrode cell in quartz glass, Sea & Sun Technology) and chlorophyll a (Seapoint Chlorophyll Fluorometer, Seapoint). The data files contain the data for temperature, salinity, density and chlorophyll a concentration; as raw data and processed and flagged according to the recommendations for real-time data processing of EuroGOOS and GTSPP, as well as the outlier detection method CoTeDe (https://github.com/castelao/CoTeDe). Biogeographic regions are determined according to Spalding et al. (2012). TEOS-10 unit conversions have been performed with the GSW Oceanographic Toolbox (McDougall and Barker, 2011).
DOI: 10.1594/pangaea.896265
title: δ¹³C data measured on Cibicides wuellerstorfi of sediment core GeoB13602-1
DOI: 10.1594/pangaea.895663
title: Processed multinet CTD data from METEOR cruise M123

description: Research expedition M123 took place from February 3rd (Walvis Bay, Namibia) to February 27th (Cape Town, South Africa), 2016. CTD data for 3 stations along the cruise track were recorded using a Sea & Sun Technology CTD90M (SN 979) down to depths of 700m. The CTD was equipped with the following sensors: Temperature sensor Pt100 model 1509 (Thermal Developments International), Conductivity sensor 7-pole platinum coated electrode cell in quartz glass (Sea & Sun Technology), Seapoint Chlorophyll Fluorometer (Seapoint) and single rod electrode ph sensor (AMT Analysenmesstechnik GmbH). The data files contain the data for temperature, salinity, density, chlorophyll a concentration and pH; as raw data and processed and flagged according to the recommendations for real-time data processing of EuroGOOS and GTSPP, as well as the outlier detection method CoTeDe (https://github.com/castelao/CoTeDe). Biogeographic regions are determined according to Spalding et al. (2012). TEOS-10 unit conversions have been performed with the GSW Oceanographic Toolbox (McDougall and Barker, 2011).
DOI: 10.1594/pangaea.895848
title: Documentation of sediment core PS2026-2
DOI: 10.1594/pangaea.895849
title: Documentation of sediment core PS2030-1
DOI: 10.1594/pangaea.895850
title: Documentation of sediment core PS2031-1
DOI: 10.1594/pangaea.895851
title: Documentation of sediment core PS2032-2
DOI: 10.1594/pangaea.895852
title: Documentation of sediment core PS2033-3
DOI: 10.1594/pangaea.895853
title: Documentation of sediment core PS2034-3
DOI: 10.1594/pangaea.895854
title: Documentation of sediment core PS2035-2
DOI: 10.1594/pangaea.895855
title: Documentation of sediment core PS2042-2
DOI: 10.1594/pangaea.895856
title: Documentation of sediment core PS2042-3
DOI: 10.1594/pangaea.895857
title: Documentation of sediment core PS2043-2
DOI: 10.1594/pangaea.895858
title: Documentation of sediment core PS2044-2
DOI: 10.1594/pangaea.895859
title: Documentation of sediment core PS2061-2