cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.889802
title: Simulations of the response of the Miocene Antarctic ice sheet to CO2-driven climate variability

description: We present ice thickness and bedrock height from simulations of the Miocene Antarctic ice sheet (AIS), using the 3D thermodynamical Parallel Ice Sheet Model (PISM) version 0.7.3. The applied climate forcing consists of temperature and precipitation anomalies with respect to a preindustrial reference simulation, obtained from simulations using the atmosphere-ocean general circulation model COSMOS. These anomalies are added to an ERA-40/WOD-09 base climate. COSMOS was run using preindustrial settings, and Miocene settings with CO2 levels of 278 ppm (low), 450 ppm (medium), and 600 ppm (high). The steady state simulations using PISM are started with present-day bedrock conditions, with a present-day AIS (Bedmap2), and isostatically rebounded after removal of the ice. Additional simulations are started with the Wilson et al. (2012) late-Eocene bedrock topography reconstruction. The steady state simulations are conducted by applying the same climate forcing over 200 kyr. The transient simulations are performed by using an index method to interpolate between different forcing climate states. In these runs, the forcing climate state is gradually varied over quasi-orbital timescales of 400 kyr, 40 kyr, 1600 kyr, or 200 kyr.Details are given in the accompanying publication. For more information or data, please contact L.B. Stap mailto:lstap@awi.de.Dataset 2019_Stap_steadystate_startfrom_presentdayAIS.nc contains the data to plot Fig. 1.Dataset 2019_Stap_PISM_transient.xlsx contains the data to plot Fig. 2 and 3.Datasets 2019_Stap_steadystate_startfrom_noice.nc and 2019_Stap_steadystate_startfrom_Wilson_noice.nc contain additional data plotted in Fig. 2 and 3.
description: The zip folder contains four files: 1. 2019_Stap_PISM_transient.xlsx, 2. 2019_Stap_steadystate_startfrom_Wilson_noice.nc, 3. 2019_Stap_steadystate_startfrom_noice.nc, 4. 2019_Stap_steadystate_startfrom_presentdayAIS.nc4. lonlatfile.nc.
description: Supplement to: Stap, Lennert Bastiaan; Sutter, Johannes; Knorr, Gregor; Stärz, Michael; Lohmann, Gerrit (2019): Transient variability of the Miocene Antarctic ice sheet smaller than equilibrium differences. Geophysical Research Letters
DOI: 10.1594/pangaea.816059
title: (Table 3) Geochemistry of individual nontronite granules (6-10 mm diameter) at DSDP Holes 70-507D and 70-509B
DOI: 10.1594/pangaea.900927
title: Tethered balloon-borne turbulence measurements during the Arctic field campaign PAMARCMiP (Balloon_20180402_1005_1232)

description: This dataset was not imported into the relational system due to its size.
DOI: 10.1594/pangaea.664006
title: Oceanography at CTD/bottle station IFREMER_0847
DOI: 10.1594/pangaea.753229
title: (Table 1) Chemical composition of basalts from the Indian Ocean floor
DOI: 10.1594/pangaea.877348
title: Annotated record of the detailed examination of Mn deposits from R/V Oceanographer Cruise RP-8-OC-76 in the DOMES, Site C area

description: Submarine photography and box cores described in this report were taken during the R/V Oceanographer Cruise RP-8-OC-76 in October 1976 over area C of the DOMES project (Deep Ocean Mining Environmental Study). This cruise was part of Phase I of the DOMES project which was conducted by the U.S. Geological Survey under the auspices of the National Oceanic and Atmospheric Administration (NOAA). The purpose of DOMES project was to acquire the information necessary to provide both a timely and an independent assessment of the impact of deep ocean manganese nodule mining on the marine ecosystem before commercial mining operations begin. It was formulated in cooperation with the academic community and the mining industry. It consisted of a two-phase study, first to obtain basic information on the deep ocean environment and then to assess the impact of prototype mining operations on that environment.
description: From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.
DOI: 10.1594/pangaea.667445
title: (Table 1) Major and trace element concentrations of lavas from Iceland active zones

description: Sample positions are estimated from map
DOI: 10.1594/pangaea.875121
title: Supplementary material, Links to 3D-PDFs and OBJ files of micro-CT scans

description: The ongoing technical revolution in non-destructive 3D-visualisation via micro-computed tomography (micro-CT) finds a valuable application in the studies of bioerosion trace fossils the three-dimensional architecture of which lies hidden within hard substrates. This technique, in concert with advanced segmentation algorithms, allows a detailed visualisation and targeted morphometric analyses even of those bioerosion traces that are otherwise inaccessible to the widely applied cast-embedding technique, because they are either filled with lithified sediment or cement, or are preserved in inherently insoluble or silicified host substrates, or because they are established type material and should not be altered.In the present contribution selected examples of such cases are illustrated by reference to bioerosion trace fossils preserved in Late Cretaceous belemnite guards from the European Chalk Province. These case studies comprise an analysis of a diverse ichno-assemblage found associated with the lectotype of the microboring Dendrina dendrina Morris, 1851 in a belemnite from the upper Campanian to lower Maastrichtian chalk of Norfolk, England, and the description of two new bioerosion trace fossils with type specimens found in belemnite guards from the lower Campanian limestones of Höver, Germany. The latter are Lapispecus hastatus isp. n., a tubular and occasionally branched macroboring for which a sipunculan or a phoronid trace maker are discussed, and Entobia colaria isp. n., a camerate network formed by an excavating sponge that eroded diagnostic grated apertures at the locations of the presumed inhalant papillae or exhaling pores, adding to or replacing filtering devices that are otherwise made of tissue and spicules.As an added value to the non-destructive visualisation procedure, the processed X-ray micro-CT scans of the studied type material provide 3D-models that may now serve as digitypes that can be studied as digital facsimile without the necessity of consulting the actual type specimens.
description: Supplement to: Wisshak, Max; Titschack, Jürgen; Kahl, Wolf-Achim; Girod, Peter (2017): Classical and new bioerosion trace fossils in Cretaceous belemnite guards characterised via micro-CT. Fossil Record, 20(2), 173-199
DOI: 10.1594/pangaea.875740
title: MATLAB scripts to calculate the water budget in the Kumano Basin, offshore Japan

description: Two matlab scripts which simulate water emission from the subducting plate and in the inner accretionary prism.
description: Supplement to: Menapace, Walter; Völker, David; Kaul, Norbert; Tryon, Michael; Kopf, Achim J (2017): The role of mud volcanism and deep-seated dewatering processes in the Nankai Trough accretionary prism and Kumano Basin, Japan. Geochemistry, Geophysics, Geosystems, 18
DOI: 10.1594/pangaea.884574
title: Results of adjoint-based climate model tuning: application to the Planet Simulator

description: The adjoint method is used to calibrate the medium complexity climate model "Planet Simulator" through parameter estimation. Identical twin experiments demonstrate that this method can retrieve default values of the control parameters when using a long assimilation window of the order of 2 months. Chaos synchronization through nudging, required to overcome limits in the temporal assimilation window in the adjoint method, is employed successfully to reach this assimilation window length. When assimilating ERA-Interim reanalysis data, the observations of air temperature and the radiative fluxes are the most important data for adjusting the control parameters. The global mean net longwave fluxes at the surface and at the top of the atmosphere are significantly improved by tuning two model parameters controlling the absorption of clouds and water vapor. The global mean net shortwave radiation at the surface is improved by optimizing three model parameters controlling cloud optical properties. The optimized parameters improve the free model (without nudging terms) simulation in a way similar to that in the assimilation experiments. Results suggest a promising way for tuning uncertain parameters in non-linear coupled climate models.
DOI: 10.1594/pangaea.840714
title: (ES-5) Elemental analysis of surface sediments from the Trondheimsfjord, central Norway
DOI: 10.1594/pangaea.495811
title: Water temperature IBT profiles from cruise U90BR89082I_1989
DOI: 10.1594/pangaea.890724
title: CICE output from Navy Earth System Model (NESM) for 2018052112

description: INITIALIZATION: 2018052112FORECASTS:daily at 00Z out to 45 days (t1068)GRIDS:ARCu0.08 -- poleward of 40NANTu0.08 -- poleward of 49.52SPARAMETERS:hi:standard_name = "sea_ice_thickness" ;hs:standard_name = "surface_snow_thickness" ;Tsfc:standard_name = "surface_temperature_where_sea_ice" ;aice:standard_name = "sea_ice_area_fraction" ;uvel:standard_name = "eastward_sea_ice_velocity" ;vvel:standard_name = "northward_sea_ice_velocity" ;sst:standard_name = "sea_water_temperature" ;uocn:standard_name = "eastward_sea_water_velocity" ;vocn:standard_name = "northward_sea_water_velocity" ;Tair:standard_name = "air_temperature" ;strength:standard_name = "compressive_strength_of_sea_ice" ;
DOI: 10.1594/pangaea.667156
title: (Table 2b) Carbon and sulphur concentrations of sediments from ODP Site 117-723, Oman continental margin, Indian Ocean
DOI: 10.1594/pangaea.879779
title: Detrital layer frequency in a 9336 year varved sequence within the Pianico-Sellere Palaeolake (Southern Alps, Italy)

description: In this paper, we present a unique 9.5 m palaeolacustrine record of 771 palaeofloods which occurred over a period of 9.3 kyr in the Piànico-Sèllere Basin (southern Alps) during an interglacial period in the Pleistocene (sometime from 780 to 393 ka) and analyse its correlation, clustering, and cyclicity properties. We first examine correlations, by applying power-spectral analysis and detrended fluctuation analysis (DFA) to a time series of the number of floods per decade, and find weak long-range persistence: a power-spectral exponent beta-PS approx. 0.39 and an equivalent power-spectral exponent from DFA, beta-DFA approx. 0.25. We then examine clustering using the one-point probability distribution of the inter-flood intervals and find that the palaeofloods cluster in time as they are Weibull distributed with a shape parameter kW = 0.78. We then examine cyclicity in the time series of number of palaeofloods per year, and find a period of about 2030 years. Using these characterizations of the correlation, clustering, and cyclicity in the original palaeoflood time series, we create a model consisting of the superposition of a fractional Gaussian noise (FGN) with a 2030-year periodic component and then peaks over threshold (POT) applied. We use this POTFGN+Period model to create 2 600 000 synthetic realizations of the same length as our original palaeoflood time series, but with varying intensity of periodicity and persistence, and find optimized model parameters that are congruent with our original palaeoflood series. We create long realizations of our optimized palaeoflood model, and find a high temporal variability of the flood frequency, which can take values of between 0 and &gt; 30 floods century-1. Finally, we show the practical utility of our optimized model realizations to calculate the uncertainty of the forecasted number of floods per century with the number of floods in the preceding century. A key finding of our paper is that neither fractional noise behaviour nor cyclicity is sufficient to model frequency fluctuations of our large and continuous palaeoflood record, but rather a model based on both fractional noise superimposed with a long-range periodicity is necessary.
description: Supplement to: Witt, Annette; Malamud, Bruce; Mangili, Clara; Brauer, Achim (2017): Analysis and modelling of a 9.3 kyr palaeoflood record: correlations, clustering, and cycles. Hydrology and Earth System Sciences, 21(11), 5547-5581
DOI: 10.1594/pangaea.890725
title: CICE output from Navy Earth System Model (NESM) for 2018052212

description: INITIALIZATION: 2018052212FORECASTS:daily at 00Z out to 45 days (t1068)GRIDS:ARCu0.08 -- poleward of 40NANTu0.08 -- poleward of 49.52SPARAMETERS:hi:standard_name = "sea_ice_thickness" ;hs:standard_name = "surface_snow_thickness" ;Tsfc:standard_name = "surface_temperature_where_sea_ice" ;aice:standard_name = "sea_ice_area_fraction" ;uvel:standard_name = "eastward_sea_ice_velocity" ;vvel:standard_name = "northward_sea_ice_velocity" ;sst:standard_name = "sea_water_temperature" ;uocn:standard_name = "eastward_sea_water_velocity" ;vocn:standard_name = "northward_sea_water_velocity" ;Tair:standard_name = "air_temperature" ;strength:standard_name = "compressive_strength_of_sea_ice" ;
DOI: 10.1594/pangaea.873392
title: Acoustic reflectivity from water-alpha Quartz boundary and double Schoch shift

description: In this experiment, we measured acoustic reflected wavefield from water and z-cut alpha quartz interface in wide azimuthal and incidental directions. This unique dataset was collected at Experimental Geophysics Group at the University of Alberta, with the large transmitter and fine receiver with the resonant frequency of 0.7 MHz and the temporal sampling of 10ns, the incident angular sampling of 0.25 degrees and azimuthal sampling of 10 degrees. Measured acoustic reflectivity indicates double Schoch shift and null reflection at the Rayleigh angle of water-alpha quartz boundary. The double Schoch shift collapses into one where the azimuthal directions are parallel to the plane of anisotropic symmetry.
description: Zip archive contains 19 plain text files and 19 JPEG graphic files. 'AXX.txt' = Tab deliminated amplitude from Azimuth 'XX' degrees and each column is starting from '15.00' degees incidental angle and increments by 0.25 degrees (column-by-column) from left to right.For more information about the dataset please forward your emails to: mailto:malehmir@ualberta.ca
DOI: 10.1594/pangaea.890726
title: CICE output from Navy Earth System Model (NESM) for 2018052612

description: INITIALIZATION: 2018052612FORECASTS:daily at 00Z out to 45 days (t1068)GRIDS:ARCu0.08 -- poleward of 40NANTu0.08 -- poleward of 49.52SPARAMETERS:hi:standard_name = "sea_ice_thickness" ;hs:standard_name = "surface_snow_thickness" ;Tsfc:standard_name = "surface_temperature_where_sea_ice" ;aice:standard_name = "sea_ice_area_fraction" ;uvel:standard_name = "eastward_sea_ice_velocity" ;vvel:standard_name = "northward_sea_ice_velocity" ;sst:standard_name = "sea_water_temperature" ;uocn:standard_name = "eastward_sea_water_velocity" ;vocn:standard_name = "northward_sea_water_velocity" ;Tair:standard_name = "air_temperature" ;strength:standard_name = "compressive_strength_of_sea_ice" ;
DOI: 10.1594/pangaea.875004
title: Simulation of leatherback turtle hatchling dispersion patterns in the Gulf of Guinea

description: This data set describes the location of virtual floats representing turtle hatchlings throughout 60 modeled years. Floats were constrained to remain within depths of 0-6 m due to the positive buoyancy of hatchlings. Floats were first assigned to one of 20,000 random release locations within a large release area 125-400 km offshore from nesting beaches throughout the Republic/Democratic Republic of the Congo, Gabon and Equatorial Guinea spanning latitudes of c. 6°S to 3.5°N. For each month over the 4-month long hatching season (January-April), each of the 20,000 floats was assigned a random release day and drift simulations ran every year during the period 1960-2007 resulting in drift trajectories of approx. 4 million virtual floats. See Scott et al., 2017, Spatio-temporal variation in ocean current-driven hatchling dispersion: Implications for the world's largest leatherback sea turtle nesting region. Diversity Distrib, http://dx.doi.org/10.1111%2Fddi.12554 for details as to the model parameters.Each data set consists of data on the float ID (number 1,2,3 etc..) and its trajectory attributes (latitude/longitude) at each time step. Data are also provided on the temperature, salinity and density of the float at its respective position/time step.Data sets are sorted by float release date, and contain one data file for each year. Each data file has 11 columns, which contain the following data: float id, longitude, latitude, depth, time step, temperature, salinity, density, no time steps since start, distance to start point, bearing from start point
description: Supplement to: Scott, Rebecca; Biastoch, Arne; Agamboue, Pierre D; Bayer, Till; Boussamba, Francois L; Formia, Angela; Godley, Brendan J; Mabert, Brice D K; Manfoumbi, Jean C; Schwarzkopf, Franziska; Sounguet, Guy-Philippe; Wagner, Patrick; Witt, Matthew J (2017): Spatio-temporal variation in ocean current-driven hatchling dispersion: Implications for the world's largest leatherback sea turtle nesting region. Diversity and Distributions
DOI: 10.1594/pangaea.884677
title: COSMOS model middle Eocene sensitivity tests with different obliquity values and Greenland-Scotland Ridge depths

description: Here we publish simulated middle Eocene (43.5-46 Ma) boreal winter sea surface temperature, sea surface salinity as well as mixed layer depth for obliquity minimum and maximum simulation with Greenland-Scotland Ridge (GSR) depth of 500 m. Furthermore, we include annual mean global meridional overturning circulation and current velocities for both orbital configurations and GSR = 500 m and additionally for minimum obliquity and GSR = 200 m. The CO2 level is set to 840 ppm in all simulations. The paleogeography is compiled by GETECH and has been used by Lunt et al. [2016, doi: 10.5194/cp-12-1181-2016]. We have slightly modified the original paleogegraphy in the North Atlantic region [Vahlenkamp et al., 2018, doi: 10.1016/j.epsl.2017.12.016]. All data are averaged over the period of 100 years. For further details on model setup please see Vahlenkamp et al. [2018, doi: 10.1016/j.epsl.2017.12.016]. The climate data has been produced with COSMOS (ECHAM5/MPIOM/OASIS3). The atmosphere component ECHAM5 was run in the resolution of T31/L19, while the ocean model MPIOM in the resolution of GR30 (bipolar orthogonal curvilinear grid with a formal resolution of ~3.0°x1.8°). OASIS3 is responsible for coupling between the atmosphere and ocean components.
DOI: 10.1594/pangaea.872138
title: Annotated record of the detailed examination of Mn deposits from R/V Eltanin Cruise 7 stations

description: Cores, submarine photography and dredges described in this report were taken during the R/V Eltanin Cruise 7 in 1963 by the Department of Geology, Florida State University. Cores and dredges were recovered for 20 stations along with bottom photography and are available at the Antarctic Research Facility, Florida State University for sampling and study.From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.
DOI: 10.1594/pangaea.875881
title: Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks, supplementary material

description: Obtaining reliable reconstructions of long-term atmospheric circulation changes in the North Atlantic region presents a persistent challenge to contemporary paleoclimate research, which has been addressed by a multitude of recent studies. In order to contribute a novel methodological aspect to this active field, we apply here evolving functional network analysis, a recently developed tool for studying temporal changes of the spatial co-variability structure of the Earth's climate system, to a set of Late Holocene paleoclimate proxy records covering the last two millenia. The emerging patterns obtained by our analysis are intimately related to long-term changes in the dominant mode of atmospheric circulation in the region, the North Atlantic Oscillation (NAO). By comparing the time-dependent inter-regional linkage structures of the obtained functional paleoclimate network representations to a recent multi-centennial NAO reconstruction, we identify strong co-variability between Southern Greenland, Svalbard and Fennoscandia as being indicative of a positive NAO phase, while connections from Greenland and Fennoscandia to Central Europe are more pronounced during negative NAO phases. By drawing upon this correspondence, we use some key parameters of the evolving network structure to obtain a qualitative reconstruction of the NAO long-term variability over the entire Common Era (last 2000 years) using a linear regression model trained upon the existing shorter reconstruction.
description: Please note, that this dataset was updated on 2019-12-13 because one column had been shifted in the original file. The original version of this dataset can be found clicking on "Original version".
description: Supplement to: Franke, Jasper G; Werner, Johannes P; Donner, Reik V (2017): Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks. Climate of the Past, 13(11), 1593-1608
DOI: 10.1594/pangaea.816617
title: (A-3.3) Water temperature measured in borehole HVO-11, 3h resolution