cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.856847
title: Icebergs in the Amundsen Sea (Antarctica) determined from ENVISAT ASAR WSM data using object-based image analysis approach, link to ESRI GDB files

description: An object-based method for automatic iceberg detection from Advanced Synthetic Aperture Radar (ASAR) images has been developed and applied in the Amundsen Sea, Antarctica. The automatic identification is based on brightness and spatial parameters of the ASAR images at five scale levels, and was verified with manual classification in four areas chosen to represent varying environmental conditions. The presented algorithm works comparatively well with images of the ocean in freezing temperatures and strong wind conditions, common in the Amundsen Sea. The detection rate was 96.2% which corresponds to 93.2% of the icebergs area, for all seasons. The algorithm generated 3.8% errors in the form of 'misses' and 7.0% of 'false alarms', mainly caused by the presence of ice floes.The method was applied on 432 radar images acquired in 2011 under different meteorological, oceanographic and sea ice conditions. As an output a map showing the probability of finding icebergs has been created. It shows that high probability coincides with depth contours and indicates a westward drift of the bergs throughout the whole region.
description: Format of GDB files:1) Longitude of a center (X_deg)2) Latitude of a centre (Y_deg)3) Area in km**2 (Area_km2)4) Perimeter in km (Perim_km)Projection: Lambert Azimuthal Equal Area: Datum: WGS-84; central_meridian = -115; latitude_of_origin = -90; false_easting = 0.0; false_northing = 0.0
description: Supplement to: Mazur, Aleksandra Katarzyna; Wåhlin, Anna; Krężel, Adam (2017): An object-based SAR image iceberg detection algorithm applied to the Amundsen Sea. Remote Sensing of Environment, 189, 67-83
DOI: 10.1594/pangaea.921316
title: (Supplement 1) Ground-based measurements on aerosol number concentrations at Cabo Verde from 2008 to 2017
DOI: 10.1594/pangaea.843727
title: Sediment optical reflection captured with hyperspectral resolution under ambient sunlight in the intertidal zone on Sylt, Germany in 2010, with links to insitu maps in HDF5 format

description: The sediment was imaged using a Pika imager from Resonon Inc. The hyperspectral imagers are stored as datacubes in HDF5 format (http://www.hdfgroup.org/HDF5/), along with the acquisition metadata.The dataset names indicate the benthic context of the acquisitions: ambient - natural undisturbed sediment worm - sediment recomposed in-situ which was defaunated, and then 4 lugworms (Arenicola marina) were introduced in the center of the plot sed - sediment recomposed in-situ which was defaunated The hypersub system was used to make acquisitions of the sediment surfaces about 5 weeks after the above sediment processing. The lateral width of the scans is approximately 80 cm.
DOI: 10.1594/pangaea.921317
title: (Supplement 1) Ground-based measurements on particle number size distributions at Cabo Verde from 2008 to 2017
DOI: 10.1594/pangaea.841221
title: Wind and ocean swell wave model (SWAN) results for coastal waters of Lizard Island, Queensland, Australia

description: The files are NetCDF, with each files being self-describing (including grid definition and result information along with units used, mean of items etc). The NetCDF structure used is also GIS compatible using ESRI ArcGIS CF-1.0 structure.The file name also indicates its contents. Key components of the file namre are:ubed = horiz velocity at the beduWSL = horiz velocity at the still water levelEd = wave energy densityEf = wave energy fluxHs = significant wave heightTp = peak wave periodmean or XX, where XX is the percentile at which this item is not exceeded (e.g., 90 would be for 90% of this item at or less than state amount in this file)._P for present sea level_S1 for 1 m sea level rise(if neither are present in file name, then it is for present sea level).ALL is all months included in the statistical calculationWET is wet season months included in the statistical calculationDRY is dry season months included in the statistical calculationSee reference for additional details on model setup, calibration and so on.
DOI: 10.1594/pangaea.730390
title: (Table 62) Chemical composition of alkali basalts from the Emperor Mount Chain, DSDP Hole 55-432A

description: Analyses have been carried out by T.V. Sverkunova and T.K. Babova in the Far East Geological Institute, Far East Scientific Center of the USSR Academy of Sciences. Ag, Mo, and Pb have not been found in all the samples.
DOI: 10.1594/pangaea.762872
title: (Table 5) Chemical composition of detrital sediments from ODP Leg 124 samples
DOI: 10.1594/pangaea.911297
title: Approach IV - day to day difference and noise dependent threshold
DOI: 10.1594/pangaea.855539
title: Global and Regional Sea level budget components from GRACE and radar altimetry (2002-2014)

description: Dividing the sea-level budget into contributions from ice sheets and glaciers, the water cycle, steric expansion, and crustal movement is challenging, especially on regional scales. Here, Gravity Recovery And Climate Experiment (GRACE) gravity observations and sea-level anomalies from altimetry are used in a joint inversion, ensuring a consistent decomposition of the global and regional sea-level rise budget. Over the years 2002-2014, we find a global mean steric trend of 1.38 ± 0.16 mm/y, compared with a total trend of 2.74 ± 0.58 mm/y. This is significantly larger than steric trends derived from in situ temperature/salinity profiles and models which range from 0.66 ± 0.2 to 0.94 ± 0.1 mm/y. Mass contributions from ice sheets and glaciers (1.37 ± 0.09 mm/y, accelerating with 0.03 ± 0.02 mm/y**2) are offset by a negative hydrological component (-0.29 ± 0.26 mm/y). The combined mass rate (1.08 ± 0.3 mm/y) is smaller than previous GRACE estimates (up to 2 mm/y), but it is consistent with the sum of individual contributions (ice sheets, glaciers, and hydrology) found in literature. The altimetric sea-level budget is closed by coestimating a remaining component of 0.22 ± 0.26 mm/y. Well above average sea-level rise is found regionally near the Philippines (14.7 ± 4.39 mm/y) and Indonesia (8.3 ± 4.7 mm/y) which is dominated by steric components (11.2 ± 3.58 mm/y and 6.4 ± 3.18 mm/y, respectively). In contrast, in the central and Eastern part of the Pacific, negative steric trends (down to -2.8 ± 1.53 mm/y) are detected. Significant regional components are found, up to 5.3 ± 2.6 mm/y in the northwest Atlantic, which are likely due to ocean bottom pressure variations.
description: Supplement to: Rietbroek, Roelof; Brunnabend, Sandra-Ester; Kusche, Jürgen; Schröter, Jens; Dahle, Christoph (2016): Revisiting the contemporary sea-level budget on global and regional scales. Proceedings of the National Academy of Sciences, 113(6), 1504-1509
DOI: 10.1594/pangaea.855850
title: A 5 million year reconstruction of sea level, temperature, and sea water δ¹⁸O

description: Marine sediment records from the Oligocene and Miocene reveal clear 400,000-year (400-kyr) climate cycles related to variations in orbital eccentricity. These cycles are also observed in the Plio-Pleistocene records of the global carbon cycle. However they are absent in the Late Pleistocene ice-age record over the past 1.5 million years. Here, we present a simulation of global ice volume over the past 5 million years with a coupled system of four 3-D ice-sheet models. Our simulation shows that the 400-kyr long eccentricity cycles of Antarctica vary coherently with d13C records during the Pleistocene suggesting that they drive the long-term carbon cycle changes throughout the past 35 million years. The 400-kyr response of Antarctica is eventually suppressed by the dominant 100-kyr glacial cycles of the large ice sheets in the Northern Hemisphere (NH).
description: A coupled system of four ice-sheet models with an innovative inverse modelling approach is used to reconstruct ice volume and temperature from benthic d18O data (LR04 stack)
description: Supplement to: de Boer, Bas; Lourens, Lucas Joost; van de Wal, Roderik S W (2014): Persistent 400,000-year variability of Antarctic ice volume and the carbon cycle is revealed throughout the Plio-Pleistocene. Nature Communications, 5
DOI: 10.1594/pangaea.848236
title: EM-120 multibeam swath bathymetry collected during Nathaniel B. Palmer cruise NBP08-05 with links to raw data files

description: Data acquisition was performed using a multibeam sonar system Simrad EM-120 from Kongsberg. Raw data are delivered within Simrad current multibeam vendor format.Raw multibeam sonar data, format SIMRAD EM-120 (ALL), packed with ZIP. SIMRAD raw data can be processed i.e. with the software packages CARIS HIPS/SIPS, Caraibes or with the open source software package MB-System (http://www.ldeo.columbia.edu/res/pi/MB-System/).In order to download data, please request access from Laura Robinson (laura.robinson@bristol.ac.uk).
DOI: 10.1594/pangaea.845744
title: Current data from a fixed monitoring station at the Guadiana Estuary, 2011-12-07 to 2012-12-12

description: Data from a bottom-mounted acoustic Doppler current profiler (Argonaut XR, SonTek, http://www.sontek.com/productsdetail.php?Argonaut-XR-10) measuring pressure, near-bottom temperature, and flow velocity through the water column every 15 min.
DOI: 10.1594/pangaea.854741
title: Carpolithes albolutum - NHMUK V68511 (Filmclip 31108 kb)

description: Video of digital x-ray tomograms in longitudinal section through fossil seed of Carpolithes albolutum nom. nov. S.Y. SM., M.E. COLLINSON, & BENEDICT (prev. identified as Alpinia) from the lower Eocene of the UK, NHMUK V68511.
DOI: 10.1594/pangaea.845748
title: Water quality observations from a fixed monitoring station at the Guadiana Estuary, 2008-2010

description: Hourly probe (YSI 6600) records of temperature, chlorophyll, salinity, dissolved oxygen, turbidity, and pH at a water depth of 1 m.
DOI: 10.1594/pangaea.854742
title: Carpolithes albolutum - NHMUK V68512 (Filmclip 26805 kb)

description: Video of digital x-ray tomograms in longitudinal section through fossil seed of Carpolithes albolutum nom. nov. S.Y. SM., M.E. COLLINSON, & BENEDICT (prev. identified as Alpinia) from the lower Eocene of the UK, NHMUK V68512.
DOI: 10.1594/pangaea.854715
title: 222Radon flux map for Europe in NetCDF format

description: A high-resolution 222Radon (222Rn) flux map for Europe was developed, based on a parameterization of 222Rn production and transport in the soil. The 222Rn exhalation rate is parameterized based on soil properties, uranium content, and modelled soil moisture from two different land-surface reanalysis data sets. Spatial variations in exhalation rates are primarily determined by the uranium content of the soil, but also influenced by soil texture and local water table depth. Temporal variations are related to soil moisture variations as the molecular diffusion in the unsaturated soil zone depends on available air-filled pore space. Monthly 222Rn exhalation rates from European soils were calculated with a nominal spatial resolution of 0.083° x 0.083°. The two realizations of the 222Rn flux map, based on the different soil moisture data sets, both realistically reproduce the observed seasonality in the fluxes but yield considerable differences for absolute flux values. The mean 222Rn flux from soils in Europe is estimated to be 10 mBq/m**2/s (ERA-Interim/Land soil moisture) or 15 mBq/m**2/s (GLDAS-Noah soil moisture) for the period 2006-2010. The 222Rn flux maps for Europe are available for the application in atmospheric transport studies, e.g to evaluate the performance of atmospheric transport models.
description: Supplement to: Karstens, Ute; Schwingshackl, Clemens; Schmithüsen, Dominik; Levin, Ingeborg (2015): A process-based 222Rn flux map for Europe and its comparison to long-term observations. Atmospheric Chemistry and Physics, 15, 12845-12865
DOI: 10.1594/pangaea.853664
title: Metabarcoding approach for non-indigenous species surveillance in marine coastal waters

description: In this study, high-throughput sequencing (HTS) metabarcoding was applied for the surveillance of plankton communities within the southeastern (SE) Baltic Sea coastal zone. These results were compared with those from routine monitoring survey and morphological analyses. Four of five nonindigenous species found in the samples were identified exclusively by metabarcoding. All of them are considered as invasive in the Baltic Sea with reported impact on the ecosystem and biodiversity. This study indicates that, despite some current limitations, HTS metabarcoding can provide information on the presence of exotic species and advantageously complement conventional approaches, only requiring the same monitoring effort as before. Even in the currently immature status of HTS, this combination of HTS metabarcoding and observational records is recommended in the early detection of marine pests and delivery of the environmental status metrics of nonindigenous species.
description: Supplement to: Zaiko, Anastasija; Samuiloviene, Aurelija; Ardura, Alba; Garcia-Vazquez, Eva (2015): Metabarcoding approach for nonindigenous species surveillance in marine coastal waters. Marine Pollution Bulletin, 100(1), 53-59
DOI: 10.1594/pangaea.843923
title: Raw data of ADCP (Acoustic Doppler Current Profiler) current measurements at time series station Las Hermanas Island, Palena Bay, Chile in 2015

description: This dataset was generated in the frame of the co-operation between the Reserva Anihue (http://www.anihuereserve.cl), the Huinay Scientific Field Station (http://www.huinay.cl) and the Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research (http://www.awi.de).Method: Acoustic Doppler Current Profiler (ADCP) Workhorse Sentinel, 600 kHz, installed at bottom, see: http://www.rdinstruments.com/sen.aspx. Data are stored in Excel format.
DOI: 10.1594/pangaea.705790
title: Documentation of sediment core GIK13587-1
DOI: 10.1594/pangaea.705857
title: Documentation of sediment core GIK13971-1
DOI: 10.1594/pangaea.831765
title: Dissolved organic matter in the Lena Delta in 2009

description: Large Arctic rivers discharge significant amounts of dissolved organic matter (DOM) into the Arctic Ocean. We sampled natural waters of the Lena River, the Buor-Khaya Bay (Laptev Sea), permafrost melt water creeks, ice complex melt water creeks and a lake. The goal of this study was to characterize the molecular DOM composition with respect to different water bodies within the Lena Delta. We aimed at an identification of source-specific DOM molecular markers and their relative contribution to DOM of different origin. The molecular characterization was performed for solid-phase extracted DOM by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Average dissolved organic carbon concentrations in the original samples were 490±75 µmol C/L for riverine and bay samples and 399±115 µmol C/L for permafrost melt water creeks. Average TDN concentrations were elevated in the permafrost melt waters (19.7±7.1 µmol N/L) in comparison to the river and the bay (both 13.2±2.6 µmol N/L). FT-ICR MS and statistical tools demonstrated that the origin of DOM in the Lena Delta was systematically reflected in its molecular composition. Magnitude weighted parameters calculated from MS data (O/Cwa, H/Cwa, C/Nwa) highlighted preliminary sample discrimination. The highest H/Cwa of 1.315 was found for DOM in melt water creeks in comparison to 1.281 for river and 1.230 for the bay samples. In the bay samples we observed a higher fraction of oxygen-rich components which was reflected in an O/Cwa ratio of 0.445 in comparison to 0.425 and 0.427 in the river and creeks, respectively. From the southernmost location to the bay a relative depletion of nitrogenous molecular markers and an enrichment of oxidized DOM components occurred. The highest contribution of nitrogenous components was indicative for creeks reflected in a C/Nwa of 104 in comparison to 143 and 176 in the river and bay, respectively. These observations were studied on a molecular formula level using principal component and indicator value analyses. The results showed systematic differences with respect to water origin and constitute an important basis for a better mechanistic understanding of DOM transformations in the changing Arctic rivers.
description: Supplement to: Dubinenkov, Ivan; Flerus, Ruth; Schmitt-Kopplin, Philippe; Kattner, Gerhard; Koch, Boris P (2014): Origin-specific molecular signatures of dissolved organic matter in the Lena Delta. Biogeochemistry, 123(1-2), 1-14
DOI: 10.1594/pangaea.832904
title: Methane and nitrous oxide emissions from a subtropical coastal embayment (Moreton Bay, Australia), links to supplementary material

description: The indicated depth in the wind and current data file is for the depth of water from the sea bottom (at the sediments) to the surface of the water. These depth points are model outputs of the CSIRO RWQM v3. They are based on inputs from the Brisbane Bar - at the port of Brisbane.
DOI: 10.1594/pangaea.705860
title: Documentation of sediment core GIK13973-4
DOI: 10.1594/pangaea.783695
title: (Table 3) Chemical composition of basalts from the West Antarctic

description: Total Fe espressed as FeO.
DOI: 10.1594/pangaea.675444
title: Radiosonde measurements from station Payerne (2003-03)
DOI: 10.1594/pangaea.921369
title: (Supplement 3) Cloud condensation nuclei measurements at Cabo Verde from 2015 to 2017
DOI: 10.1594/pangaea.831771
title: (Table 1) Age/depth tie points for the MIS 6-5 section of sediment core NIOP-C2_929
DOI: 10.1594/pangaea.846616
title: Snow melt monitoring at Scheteligfjellet, near Ny-Ålesund, Svalbard, in 2014, links to images

description: Located at approx. 550 m a.s.l. looking ESE on the Bayelva catchment, involving the Bayelva station, CCT and the village of Ny-Ålesund. Orthorectified images at 1m resolution of the camera scene (in UTM zone 35), ranging from the W side of the Bayelva (left), the Brøggerbreen moraines (bottom), Ny-Ålesund airport and village (top), and the road to Zeppelinfjellet (right). The absolute referencing accuracy is about 5 m in the W (left part) and 50 - 100 m in the E (right part). Buildings and elevated structures cause strong distortions and image errors. We provide both geopreferenced images in the geotiff-format (readable e.g. in ArcGIS) and unreferenced jpg images for easy overview.
DOI: 10.1594/pangaea.831664
title: (Table 1a) Isotope and Mg/Ca ratios of Globigerina bulloides, and dinoflagellate cysts of IODP Hole 303-U1308C

description: DEPTH, sediment/rock [m] is given in mbsf.
DOI: 10.1594/pangaea.846764
title: Chlorophyll and true-color maps of sediment from the intertidal zone in Winyah Bay, South Carolina, USA, with links to maps in HDF5 format (1.4 GB)

description: This dataset contains chlorophyll and true-color maps of intertidal sediment collected from Winyah Bay, South Carolina, USA (33.35°N, 79.19°W) and measured in sediment containers. The maps were derived from hyperspectral images of the sediment surface while immersed in an aquarium with continuous input of fresh seawater. Measurements were conducted in April 2011 in an outdoor laboratory with shaded natural illumination.The provided file is in HDF5 format, and metadata is stored for each measurement (http://www.hdfgroup.org/HDF5/). Additionally, a visualization of the spatio-temporal dynamics of surficial chlorophyll is provided as an animated GIF file (see further details).The true-color maps ("rgb-reffed") are obtained by combining three spectral channels for red, green and blue synthesis.The chlorophyll maps ("mpbi") are reported in Microphytobenthic Index units, as described in Chennu et al. 2013, doi:10.4319/lom.2013.11.511. The size of each pixel is approximately 0.5 mm.The dataset contains 6 sediment containers (B,E,F,G,H,I) measured at 39 different timepoints over four days. The containers G,H,I had no hydrodynamic treatment, whereas the containers B, E and F had a lugworm-mimic system.
DOI: 10.1594/pangaea.846765
title: Chlorophyll and true-color maps of sediment from the intertidal zone in List/Sylt, Germany, with links to maps in HDF5 format (114 MB)

description: This dataset contains chlorophyll and true-color maps of intertidal sediment collected from Sylt, Germany (55.0252°N, 8.436°E) and measured in sediment containers. The maps were derived from hyperspectral images of the sediment surface while immersed in an aquarium with continuous input of fresh seawater. Measurements were conducted in June 2010 in an outdoor laboratory with shaded natural illumination.The provided file is in HDF5 format, and metadata is stored for each dataset (http://www.hdfgroup.org/HDF5/). The true-color maps ("rgb-reffed") are obtained by combining three spectral channels for red, green and blue synthesis.The chlorophyll maps ("mpbi") are reported in Microphytobenthic Index units, as described in Chennu et al. 2013, doi:10.4319/lom.2013.11.511.The size of each pixel is approximately 0.25 mm.The dataset contains 6 sediment containers (square1, square2, square3, square7, square8, square9) measured at three different timepoints. The sediment in containers 1-3 was defaunated, whereas in 7-9 a single lugworm (Arenicola marina) was added into the sediment. The measurement timepoints were on day1, day4 and day 11.
DOI: 10.1594/pangaea.772171
title: Microphotos from IODP Hole 315-C0001F

description: Geocode = [m CSF-A] Top Core depth (below sea floor)
DOI: 10.1594/pangaea.824820
title: Point measurements of magnetic susceptibility from IODP Hole 324-U1350A

description: Geocode = Depth CSF-A (m)
DOI: 10.1594/pangaea.848688
title: Global macrozoobenthos production and energy budget data base V150731, with link to database

description: I developed a new model for estimating annual production-to-biomass ratio P/B and production P of macrobenthic populations in marine and freshwater habitats. Self-learning artificial neural networks (ANN) were used to model the relationships between P/B and twenty easy-to-measure abiotic and biotic parameters in 1252 data sets of population production. Based on log-transformed data, the final predictive model estimates log(P/B) with reasonable accuracy and precision (r2 = 0.801; residual mean square RMS = 0.083). Body mass and water temperature contributed most to the explanatory power of the model. However, as with all least squares models using nonlinearly transformed data, back-transformation to natural scale introduces a bias in the model predictions, i.e., an underestimation of P/B (and P). When estimating production of assemblages of populations by adding up population estimates, accuracy decreases but precision increases with the number of populations in the assemblage.
description: A data base on somatic production and further energy budget parameters of macro benthic invertebrates from fresh water and marine environments. Data have been extracted from published and grey literature sources. The data base consists of four files: 1. Benthos EBudget 150731 Data: The data base 2. Benthos EBudget 150731 Headers: Explanation of all column headers / parameters 3. Benthos EBudget 150731 Taxa: List of all taxa included in the data base 4. Benthos EBudget 150820 References: List of references
description: Supplement to: Brey, Thomas (2012): A multi-parameter artificial neural network model to estimate macrobenthic invertebrate productivity and production. Limnology and Oceanography-Methods, 10, 581-589
DOI: 10.1594/pangaea.823720
title: Reflectance spectroscopy and colorimetry from IODP Hole 320-U1332C

description: Geocode = Depth CSF-A (m)
DOI: 10.1594/pangaea.705781
title: Documentation of sediment core GIK13560-1