cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.890975
title: Dissolved iron measured on board with Flow injection analysis and iron-binding dissolved organic ligands from Ultra Clean CTD collected depth profiles during GEOTRACES PS94 Arctic cruise on Polarstern

description: Data from Polarstern cruise PS94 in the Arctic in 2015 with chief scientist Ursula Schauer. In order to explain geochemical cycles of Fe in the ocean, M. Rijkenberg, L. Gerringa and H. Slagter a.o. sampled filtered seawater using an ultra clean titanium CTD. In these samples on board measurements were executed: dissolved Fe by flow injection analysis and the characteristics of the dissolved organic Fe-binding organic ligands (totalL); characteristics being the concentration of these ligands and the conditional binding constant of the Fe-complex (K' expressed as its logarithm: logK). Moreover in order to relate the dissolved organic Fe-binding organic ligands to humic substances, fluorescence of dissolved organic matter was measured as well as humic substances using voltammetry.
description: Sampling of sea water was performed using the ultraclean CTD (Rijkenberg et al, 2015).Samples for dissolved metals were acidified to a pH of 1.8 using a final concentration of 0.024M ultraclean Seastar Base-line HCl (Seastar Chemicals). DFe was measured on board using flow injection analysis (FIA) based on luminol chemiluminescence (described in Rijkenberg et al., 2018). The analytical blank was on average 0.007 ± 0.004 nM DFe (n = 32) and the average detection limit (defined as 3 s of the blank pre-concentrated for 5 s) was 0.012 ± 0.007 nM DFe (n = 32).SAFe and GEOTRACES reference materials were used.K and total ligand concentrations have been calculated after Gerringa et al. (2014) using lDFe, except for stations 101, 119, 153, 161 and 173, here DFe is used.Humid substances were determined according to Laglera et al. (2007).
DOI: 10.1594/pangaea.891474
title: Current meter data from SONNE cruise SO239
DOI: 10.1594/pangaea.891342
title: Abundance of phyto- and microzooplankton in the upper 100 m during METEOR cruise M44/2 (Gulf of Aqaba and northern Red Sea)

description: The phyto- and microzooplankton samples were taken during the M44/2 curise to the northern Red Sea and the Gulf of Aqaba at different depth in the upper 100 m of the water column. The were preserved in 2% borax buffered Formaldehyde-Seawater-Solution. The dominant group at all stations are the coccolithophorids, followed by diatoms and dinoflagellates.
DOI: 10.1594/pangaea.892279
title: Prokaryotic cell abundance from the Laptev Sea (Arctic Ocean) during POLARSTERN cruise ARK-XXVII/3 from August-September 2012
DOI: 10.1594/pangaea.891136
title: Magnetic volume susceptibility of sediment core MD95-2029
DOI: 10.1594/pangaea.891148
title: Color scan (a*) of sediment core MD95-2029
DOI: 10.1594/pangaea.892103
title: Processed 2 minutes-averaged continuous VM-ADCP (vessel-mounted Acoustic Doppler Current Profiler) profiles during POLARSTERN cruise PS95

description: This data set was collected during the R. V. Polarstern cruise PS95. Outside territorial waters, current velocities were measured nearly continuously along the ship's track with a vessel-mounted TRD Instruments 153.6-kHz Ocean Surveyor ADCP. The transducers were located 11 meters below the water line and were protected against ice floes by an acoustically transparent plastic window. The current measurements used a pulse of 2 seconds and vertical bin length of 4 meters. The ship's velocity was calculated from position fixes obtained by the Global Positioning System (GPS). Heading, roll and pitch data from the ship's gyro platforms and the navigation data were used to convert the ADCP velocities into earth coordinates. The accuracy of the ADCP velocities mainly depends on the quality of the position fixes and the ship's heading data. Further errors stem from a misalignment of the transducer with the ship's centerline. The ADCP data were processed using the Ocean Surveyor Sputum Interpreter (OSSI) software developed by GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel. The reference layer was set to avoid near surface effects. The averaging interval was set to 120 seconds.Sampling interval setting: 2s; Number of bins: 80; Bin length: 4m; Pulse length: 4m; Blank beyond transmit length: 4m.Data processing setting: Upper depth of reference layer: 30m; Lower depth of reference layer: 80m; Time average: 120s; Misalignment angle: 0.845; amplitude: 1.0170.The precision for single ping and 4m cell size reported by TRDI is 0.30m/s. Resulting from the single ping precision and the number of pings (most of the time 36) during 120seconds the velocity accuracy is nearly 0.05m/s.(Velocity accuracy = single ping precision divided by square root of the number of pings).
DOI: 10.15468/dl.vtzueu
title: Occurrence Download

description: A dataset containing 52 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Specimen",
 "DatasetKey is one of (Formación de una base de datos y elaboración de un atlas de la herpetofauna de México (Anfibiosreptiles), LACM Vertebrate Collection, Código de barras genético de especies de anfibios y reptiles de México, UCM Amphibian and Reptile Collection (Arctos), MVZ Herp Collection (Arctos), Herpetofauna de la reserva de la biósfera Valle de Tehuacán-Cuicatlán (etapa final), Museum of Comparative Zoology, Harvard University, Revisión de las categorías en el proyecto de norma oficial mexicana (PROY-NOM-059-2000) para las especies de lagartijas de la familia Anguidae (Reptilia), UTA Reptiles, University of Michigan Museum of Zoology, Division of Reptiles & Amphibians)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "PublishingOrg is one of (ff90b050-c256-11db-b71b-b8a03c50a862, 493fe050-055d-11d8-b84f-b8a03c50a862, 4cadac10-3e7b-11d9-8439-b8a03c50a862, 8edbbde0-055e-11d8-b850-b8a03c50a862, 6ea87510-0561-11d8-b851-b8a03c50a862, b4640710-8e03-11d8-b956-b8a03c50a862, d003dd60-94fa-11da-a99f-b8a03c50a862)",
 "TaxonKey is Abronia oaxacae (Günther, 1885)"
 ]
}

 The dataset includes 52 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0094294-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.892284
title: Extracellular enzymatic activity from the Arctic Ocean during POLARSTERN cruise ARK-XXVII/3 (IceArc) from August-September 2012

description: Sampling was conducted with a TV-guided multiple corer (MUC), in order to retrieve undisturbed sediment cores. Upon retrieval of the MUC, the overlying water was carefully removed from each core and the core was cut into the following sediment horizons using a steel plate and a custom-made plastic ring: 0-1 cm, 1-5 cm, 5-10 cm. At each station, sediment samples from three replicate cores were pooled and transferred to a cooling container (0°C), where subsamples for extracellular enzymatic activity analyses were taken. The potential extracellular enzymatic activities of the hydrolases beta-glucosidase, chitobiase, aminopeptidase and extracellular enzymes acting as esterases were determined in alignment with Boetius and Lochte, 1994 (https://doi.org/10.3354/MEPS104299) and Boetius & Damm 1998 (https://doi.org/10.1016/S0967-0637(97)00052-6). The method uses small substrate proxies linked to a fluorophore. When the fluorophore is cleaved from the substrate, enzymatic hydrolysis is measured as an increase in fluorescence with time. Determinations of extracellular enzymatic activities were performed in triplicate for all samples with a Hitachi F-2000 spectrofluorometer.
description: The substrates and final concentrations used in the assays were the following:100 µM 4-Methylumbelliferyl ß-D-glucopyranoside to measure the activity of beta-glucosidases.100 µM 4-Methylumbelliferyl N-acetyl-ß-D-glucosaminide to measure the activity of chitobiases .500 µM L-Leucine-7-amino-4- methylcoumarin hydrochloride to measure the activity of aminopeptidases.100 µM Fluorescein diacetate to measure the activity of esterases.
DOI: 10.1594/pangaea.892317
title: METEOR cruise M112 raw data of EM122 multibeam echosounder (bathymetry, beam time series & water column) including SVPs

description: Hydroacoustic raw data recorded during M112 between 06.11.2014 and 15.12.2014 in the eastern Mediterranean Sea. The aim of the cruise was to investigate in mud volcanoes of the Calabrian Arc in Italian waters, where 54 potential mud volcanoes have been documented while it remained unclear whether they are still active or not. Therefore, the bathymetric surveys were accompanied with investigations in the water column. Several sound velocity profiles (SVPs) were taken to correct the bathymetry. CI Citation: Paul Wintersteller (seafloor-imaging@marum.de) as responsible party for bathymetry post-processing and its products. Description of the data source: During the cruise M112 the Kongsberg EM122 multibeam echosounder with a nominal sounding frequency of 12 kHz was utilized. 288 beams (and up to 864 soundings in equidistant and dual swath mode) are formed for each ping with a 1°(Tx)/2°(Rx) footprint while the seafloor is detected using amplitude and phase information for each beam sounding. For further information consult https://www.km.kongsberg.com/. The EM122 was recording constantly within the permitted areas, either designated to bathymetry surveys or flare imaging-surveys. Responsible person during this cruise / PI: Paul Wintersteller (pwintersteller@marum.de) and Christian Ferreira (cferreira@marum.de).Chief Scientist: G. Bohrmann gbohrmann@marum.deCSR: http://www.bsh.de/aktdat/dod/fahrtergebnis/2014/20140278.htm A special thanks goes to the watch keeper during M112: M. Wiebe, D. Praeg, C. Johansen,O. Candoni, T. Biller, W. Menapace
DOI: 10.1594/pangaea.891210
title: Physical oceanography during Sonne cruise SO126

description: Hydrographic observations in the Gulf of Bengalen during Sonne cruise 126 from 20. November - 20. December 1997.
DOI: 10.1594/pangaea.892336
title: CTD-profiles from SONNE cruise SO239 and SO240
DOI: 10.1594/pangaea.892564
title: Physical oceanography (CTD) during METEOR cruise M136

description: PO-GLOBAL-SVN = 486 used on 18-May-2018 14:03:41Matlab = 9.4.0.813654 (R2018a)Release = 3nc_uncertainty_p = 2.000000nc_uncertainty_t = 0.002000nc_uncertainty_s = 0.002000nc_uncertainty_o = 1.500000
DOI: 10.1594/pangaea.892348
title: Physical oceanography during Valdivia cruise VA129

description: Hydrographic observations in the North Atlantic during Valdivia cruise 129 from 12. September - 6. October 1992. This dataset contains one station (VA129_3-1) which is not present in doi:10.1594/PANGAEA.290722.
DOI: 10.1594/pangaea.892590
title: Fragilariopsis kerguelensis valves of sediment core PS1768-8, raw data

description: For each depth sampled from sediment core PS1768-8, a corresponding folder contains the data retrieved with and exported from SHERPA.
DOI: 10.1594/pangaea.892592
title: Scripts and SHERPA settings for Fragilariopsis kerguelensis valve morphometry of sediment core PS1768-8

description: For a detailed explanation of the files, please refer to the SHERPA document "Technical Details". SHERPA can be downloaded from http://awi.de/sherpa
DOI: 10.1594/pangaea.892828
title: Physical oceanography during Valdivia cruise VA86

description: Schauer, Ursula (1989): Hydrographic observations in the Arctic Front during Valdivia cruise 86 from 9. August - 5. September 1989.
DOI: 10.1594/pangaea.892933
title: Stable isotopes of Melonis affinis in core MD08-3180

description: -0.20 ‰ - Hoogakker et al., (2011); Jansen et al., (1988), tested with paralell measurements+1.55‰ - derived from paralell measurements
DOI: 10.1594/pangaea.893036
title: Long-term acoustic direct-path ranging at the seafloor offshore Etna volcano (April 2016 - July 2017)

description: Acoustic direct line-of-sight distance measurements offshore Etna volcano by means of a network of five transponders. The data include travel times between all transponders, pressure, temperature (inside pressure tube), sound velocity, and inclination.
description: Supplement to: Urlaub, Morelia; Petersen, Florian; Gross, Felix; Bonforte, Alessandro; Puglisi, Giuseppe; Guglielmino, Francesco; Krastel, Sebastian; Lange, Dietrich; Kopp, Heidrun (2018): Gravitational collapse of Mount Etna's southeastern flank. Science Advances, 4(10), eaat9700
DOI: 10.1594/pangaea.893103
title: M111 raw data of EM122 multibeam echosounder (bathymetry, beam time series)

description: Multibeam echosounder (MBES) data recorded during RV METEOR cruise M111 between 10.10.2014 and 01.11.2014 in the eastern Mediterranean Sea. The aim of the cruise was to quantify the deep geometry and architecture of the Calabria subduction zone and Ionian Sea lithosphere and to shed light on the nature of the Ionian Sea with OBS/OBH and deep sea seismics. Additionally the M111 cruise formed the core of an ambitious investigation covering the Ionian Sea and island of Sicily. CI Citation: Paul Wintersteller (seafloor-imaging@marum.de) as responsible party for bathymetry raw data ingest and approval.Description of processed data sources: During the cruise M111 the Kongsberg EM122 multibeam echosounder with a nominal sounding frequency of 12 kHz was utilized. 288 beams (and up to 864 soundings in equidistant and dual swath mode) are formed for each ping with a 1°(Tx)/2°(Rx) footprint while the seafloor is detected using amplitude and phase information for each beam sounding. For further information consult https://www.km.kongsberg.com/. The EM122 was recording during the deployment of the OBH/OBS, during seismic surveys and during transits. Responsible person during this cruise / PI: Ingo Klaucke (iklaucke@geomar.de). Chief Scientist: H. Kopp hkopp@geomar.de CR: https://www.tib.eu/de/suchen/id/awi%3Adoi~10.2312%252Fcr_m111/ CSR: http://www.bsh.de/aktdat/dod/fahrtergebnis/2014/20140277.htm Responsible person for data delivery and approval: Paul Wintersteller (seafloor-imaging@marum.de) A special thanks goes to to the watch keeper during M111: Marzia Rovere, Ingo Klaucke, Anne Krabbenhoeft, Marc-André Gutscher
DOI: 10.1594/pangaea.893725
title: Near-ice hydrographic data from Seaglider missions PS85_SG127 in the Western Greenland Sea in summer 2014

description: The variable name DIVE_NR was changed to DIVE_NO and to the description of w (vertical velocity of the glider) was added: “positive upward” (2019-06-05).
DOI: 10.1594/pangaea.893015
title: X-ray fluorescence (XRF) core scanning data of sediment core GeoB12624-1

description: We present X-Ray Fluorescence (XRF) Scanner measurements from a 6 m long sediment core (GeoB12624-1) on the upper slope of Tanzania to reconstruct the climatic evolution in East Africa since the Last Glacial Maximum (LGM). Log-ratios of Fe/Ca and Ti/Ca are indicative for sediment discharge of the Rufiji River, which is controlled by climatic conditions in the Rufiji catchment area. The most significant changes in major elemental composition occurred at 15.1 and 7.4 ka highlighted by the regime shift index values. The data set records distinct precipitation peaks during the early Holocene. This corresponds a maximum in the Northern Hemisphere (NH) summer insolation and results in a transition from the arid LGM to the humid early Holocene. Our geochemical record also indicates that this climatic transition was interrupted by two severe droughts that occurred during NH cold intervals: the Heinrich stadial 1 (HS1) and the Younger Dryas (YD). Through a comparison with other nearby paleoclimatic records, we suggest that arid climatic conditions only occurred in East Africa north of 8–10°S, whereas in southern East Africa around 15–20°S increased humidity during the HS1 and YD prevailed. We thus conclude that these two drought events were caused by a southward migration of the Intertropical Convergence Zone (ITCZ) which was fostered by the NH cooling during the HS1 and YD. Hence, our new geochemical record clearly documents that the East African climate not only responded to low-latitude insolation forcing on sub-orbital time scales, but also, was strongly influenced by high-latitude cooling during the HS1 and YD periods.
description: Supplement to: Liu, Xi-Ting; Rendle-Bühring, Rebecca; Henrich, Rüdiger (2018): High-and low-latitude forcing of the East African climate since the LGM: Inferred from the elemental composition of marine sediments off Tanzania. Quaternary Science Reviews, 196, 124-136
DOI: 10.1594/pangaea.893174
title: Physical oceanography in the western part of the Romanche Fracture Zone in 2014
DOI: 10.1594/pangaea.893205
title: Gridded EM122 multibeam-echosounder bathymetry of cruise M111

description: Bathymetry based on data recorded during M111 between 10.10.2014 and 01.11.2014 in the eastern Mediterranean Sea. The aim of the cruise was to quantify the deep geometry and architecture of the Calabria subduction zone and Ionian Sea lithosphere and to shed light on the nature of the Ionian Sea with OBS/OBH and deep sea seismics. Additionally the M111 cruise formed the core of an ambitious investigation covering the Ionian Sea and island of Sicily. CI Citation: Paul Wintersteller (seafloor-imaging@marum.de) as responsible party for bathymetry. Description of processed data sources: During the cruise M111 the Kongsberg EM122 multibeam echosounder with a nominal sounding frequency of 12 kHz was utilized. 288 beams (and up to 864 soundings in equidistant and dual swath mode) are formed for each ping with a 1°(Tx)/2°(Rx) footprint while the seafloor is detected using amplitude and phase information for each beam sounding. For further information consult https://www.km.kongsberg.com/. The EM122 was recording during the deployment of the OBH/OBS, during seismic surveys and during transits. Responsible person during this cruise / PI: Ingo Klaucke (iklaucke@geomar.de). Description of data processing: Postprocessing and products were conducted by the Seafloor-Imaging & Mapping group of MARUM, responsible person: Paul Wintersteller (seafloor-imaging@marum.de). The open source software MB-System suite (Caress, D.W., and D.N. Chayes, MB-System Version 5.5, open source software distributed from the MBARI and L-DEO web sites, 2000-2012.) was utilized for this purpose. A tide correction was applied, based on the Oregon State University (OSU) tidal prediction software (OTPS) that is retrievable through MB-System. The CTD measurements taken during the M111 cruise were sufficient to represent the changes in the sound velocity throughout the study area. Further roll, pitch and heave corrections were not applied for the M111 data. Bathymetric data has been manually cleaned for existing artefacts with mbeditviz. NetCDF (GMT) grids of the product and the statistics were created using mbgrid. No total propagated uncertainty (TPU) has been calculated to gather vertical or horizontal accuracy. The currently published bathymetric grid of the cruise has a resolution of 70 m. A higher resolution is, at least partly, achievable. The grid extended with _num represents a raster dataset with the statistical number of beams/depths taken into account to create the depth of the cell. The extended _sd-grid contains the standard deviation for each cell. All grids produced are retrievable through the PANGAEA database (www.pangaea.de). Chief Scientist: H. Kopp hkopp@geomar.de CR: https://www.tib.eu/de/suchen/id/awi%3Adoi~10.2312%252Fcr_m111/ CSR: http://www.bsh.de/aktdat/dod/fahrtergebnis/2014/20140277.htm A special thanks goes to the PIs and watch keeper of the hydroacoustic systems during M111: Marzia Rovere, Ingo Klaucke, Anne Krabbenhoeft, Marc-André Gutscher
DOI: 10.1594/pangaea.893734
title: Near-ice drift data from Seaglider missions PS85_SG127 in the Western Greenland Sea in summer 2014

description: The variable DIVE_NO was added, dac_u and dac_v (depth averaged currents in x- and y-direction) were recalculated to match the unit [ms^-1] (2019-06-05).
DOI: 10.1594/pangaea.893862
title: Thorium isotopes in the water column at station PS70/260

description: Dissolved samples were filtered directly from the 24 L CTD-Niskin® bottles into cubitainers (LDPE) using 0.45 µm pore size Acropaks®. Samples were collected in volumes of 1 L, 2 L, and 10 L and acidified with concentrated ultraclean HNO3. Seawater for the analysis of total 230Th was sampled without filtration. The analyses were done at the University of Minnesota, Minneapolis, following methods described by Shen et al., 2003. The concentrations were measured using Inductively Coupled Plasma Mass Spectrometry (ICP-MS, Thermo Finnigan, Neptune) equipped with an secondary electron multiplier (SEM) and a Retarding Potential Quadrupole (RPQ) energy filter.===============Version comment:2019-12-17: Add Thorium 232, dissolved
DOI: 10.15468/dl.8u8cqu
title: Occurrence Download

description: A dataset containing 16 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Bulbostylis barbata subsp. barbata)",
 "HasCoordinate is true"
 ]
}

 The dataset includes 16 records from 8 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0094295-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.894194
title: Dissolved rare earth elements from water samples during METEOR cruise M90
DOI: 10.1594/pangaea.894309
title: Median age, benthic oxygen isotope ratios, and 95% error margin of sediment core GeoB9508-5
DOI: 10.1594/pangaea.894310
title: Median age, benthic oxygen isotope ratios, and 95% error margin of sediment core GeoB9526-5
DOI: 10.1594/pangaea.894311
title: Median age, benthic oxygen isotope ratios, and 95% error margin of sediment core GeoB9510-1
DOI: 10.1594/pangaea.894312
title: Median age, benthic oxygen isotope ratios, and 95% error margin of sediment core GeoB9512-5
DOI: 10.1594/pangaea.894313
title: Median age, benthic oxygen isotope ratios, and 95% error margin of sediment core GeoB9513-3

description: Value at 8 cm (2.58 per mil PDB) rejected due to analytical problems.
DOI: 10.1594/pangaea.894842
title: Pore-water manganese and nitrate data of sediment cores retrieved during R/V SONNE cruise SO239 in the IOM area
DOI: 10.1594/pangaea.894848
title: Ex-situ oxygen data of sediment cores retrieved during R/V SONNE cruise SO239 in the BGR area
DOI: 10.1594/pangaea.894849
title: Ex-situ oxygen data of sediment cores retrieved during R/V SONNE cruise SO239 in the GSR area
DOI: 10.1594/pangaea.894850
title: Ex-situ oxygen data of sediment cores retrieved during R/V SONNE cruise SO239 in the IFREMER-1 area
DOI: 10.1594/pangaea.894851
title: Ex-situ oxygen data of sediment cores retrieved during R/V SONNE cruise SO239 in the IFREMER-2 area
DOI: 10.1594/pangaea.894852
title: Ex-situ oxygen data of sediment cores retrieved during R/V SONNE cruise SO239 in the IOM area
DOI: 10.1594/pangaea.894859
title: Solid-phase radionuclide data of sediment core SO239_121-1 retrieved during R/V SONNE cruise SO239 in the GSR area
DOI: 10.1594/pangaea.894861
title: Solid-phase radionuclide data of sediment core SO239_167-1 retrieved during R/V SONNE cruise SO239 in the IFREMER-1 area
DOI: 10.1594/pangaea.894862
title: Solid-phase radionuclide data of sediment core SO239_175-1 retrieved during R/V SONNE cruise SO239 in the IFREMER-2 area
DOI: 10.1594/pangaea.894863
title: Solid-phase radionuclide data of sediment core SO239_84-1 retrieved during R/V SONNE cruise SO239 in the IOM area
DOI: 10.1594/pangaea.894873
title: Ship based cetacean survey Southern Ocean 2014/2015

description: Distance sampling survey for cetaceans in the Southern Ocean conducted on board of Polarstern during the austral summer 2014/2015. Effort related sighting data were collected en-route during a dedicated survey.
DOI: 10.1594/pangaea.894680
title: Age model of sediment core GeoB3910-2