458 Works

In-situ geothermal heat flow estimates and water column temperature profiles colected during RV POLARSTERN cruise PS104, 2017, supplement to: Dziadek, Ricarda; Gohl, Karsten; Kaul, Norbert E (2019): Elevated geothermal surface heat flow in the Amundsen Sea Embayment, West Antarctica. Earth and Planetary Science Letters, 506, 530-539

Ricarda Dziadek
This dataset compiles in-situ temperature measurements for geothermal heat flow estimates and water temperature profiles of the water column, extracted from Miniaturized Temperature data-Logger (MTL). The data were collected during RV POLARSTERN cruise PS104 in 2017 in Amundsen Sea.

Forest plantation mapping in the Southern Highlands, Tanzania 2016, supplement to: Koskinen, Joni; Leinonen, Ulpu; Vollrath, Andreas; Ortmann, Antonia; Lindquist, Erik J; d'Annunzio, Remi; Pekkarinen, Anssi; Käyhkö, Niina (2019): Participatory mapping of forest plantations with Open Foris and Google Earth Engine. ISPRS Journal of Photogrammetry and Remote Sensing, 148, 63-74

Joni Koskinen, Ulpu Leinonen, Andreas Vollrath, Antonia Ortmann, Erik J Lindquist, Remi d'Annunzio, Anssi Pekkarinen & Niina Käyhkö
Recent years have witnessed the practical value of open-access Earth observation data catalogues and software in land and forest mapping. Combined with cloud-based computing resources, and data collection though the crowd, these solutions have substantially improved possibilities for monitoring changes in land resources, especially in areas with difficult accessibility and data scarcity. In this study, we developed and tested a participatory mapping methodology utilizing the open data catalogues and cloud computing capacity to map the...

Geochemistry and δ¹⁸O G.ruber records of sediment cores MP50PC, MP39PC and MP37PC, supplement to: Filippidi, Amalia; de Lange, Gert J (2019): Eastern Mediterranean Deep Water Formation During Sapropel S1: A Reconstruction Using Geochemical Records Along a Bathymetric Transect in the Adriatic Outflow Region. Paleoceanography and Paleoclimatology, 34(3), 409-429

Amalia Filippidi & Gert J de Lange
Eastern Mediterranean thermohaline circulation is directly influenced by mid- and low-latitude climate systems. The dramatic paleoclimate changes during the last African Humid Period (~10-6ka BP) were captured in Mediterranean sediments as the distinctly organic-rich unit sapropel S1. Here, deep-water formation variability during S1 deposition, is reconstructed. We use geochemical records of three cores along a bathymetric transect (775-1359-1908m water depth), at the transition between the Adriatic deep-water formation area and the Eastern Mediterranean. In all...

Geochemical properties, stable isotopes and foraminifera abundances in sediment cores from the Portuguese Margin taken during the POSEIDON cruise PO200/10 in 1993. European North Atlantic Margin (ENAM): Sediment Pathways, Processes and Fluxes

Fatima F Abrantes, Luis Gaspar, Eckard Helmers, Neven Loncaric & Jose Monteiro
Grain Size, Lithic Grains (#/g), CaCO3 , TOC, N, P2O5, isotopic analyses (d18O and d13C) on G, bulloides, Planktonic and Benthic foraminifera quantification, % abundance of planktonic foraminifera species for box-cores PO200/10 5.1, 6,1 and 7.1.Gravity cores PO200/10 6.2, 8.2, 21.1 and 28.1 also have isotope data for G. inflata, G. ruber (w), Uvigerina peregrina and Cibicidoides wuellerstorfiThe cores were collected during the Poseidon R/V cruise PO200/10 along the Portuguese Margin in August 1993.

Water column and sediment geochemistry in the Eastern Gotland Basin after a major Baltic inflow in June 2016, supplement to: Hermans, Martijn; Lenstra, Wytze K; van Helmond, Niels A G M; Behrends, Thilo; Egger, Matthias; Séguret, Marie J M; Gustafsson, Erik; Gustafsson, Bo G; Slomp, Caroline P (2019): Impact of natural re-oxygenation on the sediment dynamics of manganese, iron and phosphorus in a euxinic Baltic Sea basin. Geochimica et Cosmochimica Acta, 246, 174-196

Martijn Hermans, Wytze K Lenstra, Niels A G M van Helmond, Thilo Behrends, Matthias Egger, Marie J M Séguret, Erik Gustafsson, Bo G Gustafsson & Caroline P Slomp
The Baltic Sea is characterized by the largest area of hypoxic (oxygen <2 mg/L) bottom waters in the world's ocean induced by human activities. Natural ventilation of these oxygen depleted waters largely depends on episodic Major Baltic Inflows from the adjacent North Sea. In 2014 and 2015, two such inflows led to a strong rise in oxygen and decline in phosphate in waters below 125 m depth in the Eastern Gotland Basin. This provided the...

Atmospheric measurements from the Geodetic Observatory Wettzell during the CONT-17 VLBI campaign (Nov 2017 - Dec 2017), supplement to: Klügel, Thomas; Böer, Armin; Schüler, Torben; Schwarz, Walter (2019): Atmospheric data set from the Geodetic Observatory Wettzell during the CONT-17 VLBI campaign. Earth System Science Data, 11(1), 341-353

Thomas Klügel, Armin Böer, Torben Schüler & Walter Schwarz
Continuous Very Long Baseline Interferometry (VLBI) observations are designed to obtain highly accurate data for detailed studies of high frequency Earth rotation variations, reference frame stability and daily to sub-daily site motions. During the CONT-17 campaign that covered a time span of 15 days between Nov. 28 and Dec. 12, 2017, a comprehensive data set of atmospheric observations and weather model data were acquired at the Geodetic Observatory Wettzell, where three radio telescopes contributed to...

Water vapour mixing ratio over Ny-Alesund from LiDAR measurements 2015-2018, supplement to: Kulla, Birte Solveig; Ritter, Christoph (2019): Water vapor calibration: Using a Raman lidar and radiosoundings to obtain highly resolved water vapor profiles. Remote Sensing, 11(6), 616

Birte Solveig Kulla & Christoph Ritter
Using the Raman channels of the Koldeway Aerosol Raman Lidar (KARL) a water vapour mixing ratio is derived.Data is availiable for all measurements during the dark season since 2015.Calibration in the winters 2015/2016 and 2016/2017 was performed using the GRUAN radiosounding product.For comparison those winters where recalculated with radiosounding measurements processed by the Vaisala Algorithm.The winter 2017/2018 is calibrated using radiosounding measurement from the RS41processed by the Vaisala Algrithm.The details of the calibration of this...

XRF measurements on split-core surfaces and on individual core samples of IODP Expedition 313 holes

Jenny Inwood, A McGrath, S Morgan, Michael J Norry, S Davies & H Foster
Integrated Ocean Drilling Program Expedition 313 recovered siliciclastic sediments from three holes cored through a series of Miocene clinoforms offshore New Jersey. The clinoform sequence that lies between seismic reflectors m5.2 and m4.1 has been dated as mid-Miocene within an interval of major climatic change and displays interesting sedimentological and petrophysical features. However, the depth ties between surfaces in the recovered succession and seismic reflectors, correlation across sites, and depositional environments are not all well...

Microbial release of marine Chromophoric Dissolved Organic Matter in microcosm experiments in the presence of polystyrene microplastics, supplement to: Galgani, Luisa; Engel, Anja; Rossi, Claudio; Donati, Alessandro; Loiselle, Steven Arthur (2018): Polystyrene microplastics increase microbial release of marine Chromophoric Dissolved Organic Matter in microcosm experiments. Scientific Reports, 8(1)

Luisa Galgani, Anja Engel, Claudio Rossi, Alessandro Donati & Steven Arthur Loiselle
Chromophoric dissolved organic matter (CDOM) is the photo-reactive fraction of the marine dissolved organic matter (DOM) pool. Changes in CDOM quality and quantity have impacts on marine microbial dynamics and the underwater light environment. One major source of CDOM is produced by marine bacteria through their alteration of pre-existing DOM substrates. In a series of microcosm experiments in controlled marine conditions, we explored the impact of polystyrene microplastics on the quality and quantity of microbial...

Experiment on the effects of oligo-alginate elicitation on juvenile and adult sporophytes of Saccharina japonica and Saccharina latissima, supplement to: Wang, Gaoge; Chang, Lirong; Zhang, Rui; Wang, Shasha; Wei, Xiaojiao; Rickert, Esther; Krost, Peter; Xiao, Luyang; Weinberger, Florian (2019): Can targeted defense elicitation improve seaweed aquaculture? Journal of Applied Phycology, 31(3), 1845-1854

Gaoge Wang, Lirong Chang, Rui Zhang, Shasha Wang, Xiaojiao Wei, Esther Rickert, Peter Krost, Luyang Xiao & Florian Weinberger
We here present data underlying a pilot study that investigated the effects of oligo-alginate elicitation on juvenile and adult sporophytes of Saccharina japonica cultivated in China and on adult sporophytes of Saccharina latissima cultivated in Germany. In two consecutive years, treatment with oligo-alginate clearly reduced the detachment of S. japonica juveniles from their substrate curtains during the nursery stage in greenhouse ponds (see data underlying Figure 1 https://doi.pangaea.de/10.1594/PANGAEA.896660). Oligo-alginate elicitation also decreased the density of...

Remote and local drivers of oxygen and nitrate variability in the shallow oxygen minimum zone off Mauritania in June 2014, supplement to: Thomsen, Soeren; Karstensen, Johannes; Kiko, Rainer; Krahmann, Gerd; Dengler, Marcus; Engel, Anja (2019): Remote and local drivers of oxygen and nitrate variability in the shallow oxygen minimum zone off Mauritania in June 2014. Biogeosciences, 16(5), 979-998

Soeren Thomsen, Johannes Karstensen, Rainer Kiko, Gerd Krahmann, Marcus Dengler & Anja Engel
Upwelling systems play a key role in the global carbon and nitrogen cycles and are also of local relevance due to their high productivity and fish resources. To capture and understand the high spatial and temporal variability of physical and biogeochemical parameters found in these regions novel measurement technics have to be combined in an interdisciplinary manner. Here we use high-resolution glider-based physical-biogeochemical observations in combination with ship-based underwater vision profiler, sensor and bottle data...

UAV-based methane data from Barter Island, Northern Alaska, September 2017, supplement to: Oberle, Ferdinand K; Gibbs, Ann E; Richmond, Bruce M; Erikson, Li H; Waldrop, Mark P; Swarzenski, Peter W (2019): Towards determining spatial methane distribution on Arctic permafrost bluffs with an unmanned aerial system. SN Applied Sciences, 1(236)

Ferdinand K Oberle
Arctic permafrost stores vast amounts of methane (CH4) in subsurface reservoirs. Thawing permafrost creates areas for this potent greenhouse gas to be released to the atmosphere. Identifying 'hot spots' of methane flux on a local scale has been limited by the spatial scales of traditional ground-based or satellite-based methane-sampling methods. Here we present methane data from along the coast of Barter Island, Alaska that was produced with an Unmanned Aerial System and an off-the-shelf, cost-effective...

Organic biomarkers from ODP sites 151-907 and 151-911, used to reconstruct the surface temperatures and sea ice conditions in the Pliocene Nordic Seas, supplement to: Clotten, Caroline; Stein, Ruediger; Fahl, Kirsten; Schreck, Michael; Risebrobakken, Bjørg; De Schepper, Stijn (2019): On the causes of Arctic sea ice in the warm Early Pliocene. Scientific Reports, 9(1)

Caroline Clotten, Ruediger Stein, Kirsten Fahl, Michael Schreck, Bjørg Risebrobakken & Stijn De Schepper
This dataset consists of organic biomarkers used to reconstruct the sea surface temperature and sea ice conditions in the Pliocene Nordic Seas. Specifically, it includes alkenone, IP25 and sterol data from the Pliocene of two Ocean Drilling Program sites, ODP Site 907 in the Iceland Sea and ODP Site 911 on the Yermak Plateau (Arctic Ocean).

Holocene palaeoceanographic evolution off West Greenland, supplement to: Perner, Kerstin; Moros, Matthias; Jennings, Anne E; Lloyd, Jeremy M; Knudsen, Karen Luise (2013): Holocene palaeoceanographic evolution off West Greenland. The Holocene, 23(3), 374-387

Kerstin Perner, Matthias Moros, Anne E Jennings, Jeremy M Lloyd & Karen Luise Knudsen
Benthic foraminiferal assemblages from a core southwest of Disko Bugt provide a Holocene perspective (last ~7 ka BP) on ice-sheet/ocean interactions between the West Greenland Current (WGC) and the West Greenland ice sheet. Changes in the fauna reveal significant variations in the water mass properties (temperature and salinity) of the WGC through time. From 7.3 to 6.2 ka BP, a relatively warm/strong WGC influences ice-sheet melt in Disko Bugt and causes enhanced meltwater production, resulting...

2600 years of stratospheric volcanism reconstruction through sulfate isotopes for Antarctic ice cores

Elsa Gautier, Joël Savarino & James Farquhar
We present a 2600 year chronology of stratospheric volcanic events using isotopic signatures (Δ33S and in some cases Δ17O) of ice core sulfate. Five closely-located ice cores from Dome C, Antarctica, are used to reconstruct a record that differs subtly from recent reconstructions calibrated using synchronous volcanic sulfate deposition in Greenland and Antarctica to identify eruptions with global-scale sulfate distribution. Comparing the Dome C stratospheric reconstruction shows good agreement with the recent parts of these...

Mortality of limpets and seagrass fouling in response to experimental warming, supplement to: Pillay, Deena; Waspe, Christopher (in prep.): Conservation of a temperate African seagrass (Zostera capensis): specialist grazing and warming-induced fouling. Biology Letters

Deena Pillay & Christopher Waspe
The experiment tests the effects of warming on grazer epiphyte in interactions in seasgrass mesocosms. The biomass of epiphytic fouling in response to warming and grazer treatments are presented in 1 dataset. In the second dataset, grazer mortality is presented in response to warming temperatures.

Pollen data from lake sediment core CH06 spanning the last ~9000 cal. yr. BP, supplement to: Epp, Laura Saskia; Kruse, Stefan; Kath, Nadja J; Stoof-Leichsenring, Kathleen Rosmarie; Tiedemann, Ralph; Pestryakova, Luidmila A; Herzschuh, Ulrike (2018): Temporal and spatial patterns of mitochondrial haplotype and species distributions in Siberian larches inferred from ancient environmental DNA and modeling. Scientific Reports, 8(1), 17436

Laura Saskia Epp
Changes in species' distributions are classically projected based on their climate envelopes. For Siberian forests, which have a tremendous significance for vegetation-climate feedbacks, this implies future shifts of each of the forest-forming larch (Larix) species to the north-east. However, in addition to abiotic factors, reliable projections must assess the role of historical biogeography and biotic interactions. Here, we use sedimentary ancient DNA and individual-based modelling to investigate the distribution of larch species and mitochondrial haplotypes...

Marine Isotope Stage 4 in Australasia: a full glacial culminating 65,000 years ago - global connections and implications for human dispersal, supplement to: De Deckker, Patrick; Arnold, Lee; van der Kaars, Sander; Bayon, Germain; Stuut, Jan-Berend W; Perner, Kerstin; Lopes dos Santos, Raquel A; Uemura, Ryu; Demuro, Martina (2018): Marine Isotope Stage 4 in Australasia: a full glacial culminating 65,000 years ago - global connections and implications for human dispersal. Quaternary Science Reviews, 204, 187-207

Patrick De Deckker, Lee Arnold, Sander van der Kaars, Germain Bayon, Jan-Berend W Stuut, Kerstin Perner, Raquel A Lopes dos Santos, Ryu Uemura & Martina Demuro
Over the last four decades of palaeoclimate research, significant emphasis has been placed on the Last Glacial Maximum (LGM) spanning 26.5-19 thousand years ago (ka), a period that saw significant (~125 m) sea-level reductions and major ice caps adorning large parts of the Northern Hemisphere. Here, we present evidence for another major glacial period spanning 71-59 ka (Marine Isotope Stage 4: MIS4) from a well-dated marine sequence offshore South Australia. The astronomically-tuned chronology of this...

Analysis of Fe in pore water, solid phase and water column of different stations on the northwestern Black Sea shelf, supplement to: Lenstra, Wytze K; Hermans, Martijn; Séguret, Marie J M; Witbaard, Rob; Behrends, Thilo; Dijkstra, Nikki; van Helmond, Niels A G M; Kraal, Peter; Laan, Patrick; Rijkenberg, Micha J A; Severmann, Silke; Teaca, Adrian; Slomp, Caroline P (2019): The shelf-to-basin iron shuttle in the Black Sea revisited. Chemical Geology, 511, 314-341

Wytze K Lenstra, Martijn Hermans, Marie J M Séguret, Rob Witbaard, Thilo Behrends, Nikki Dijkstra, Niels A G M van Helmond, Peter Kraal, Patrick Laan, Micha J A Rijkenberg, Silke Severmann, Adrian Teaca & Caroline P Slomp
Continental shelf sediments are a major source of iron (Fe) for phytoplankton in surface waters. In this study, we investigate the mechanisms that control release of Fe from shelf sediments and its lateral transport (shuttling) in oxic and hypoxic waters on the northwestern Black Sea shelf. We find that at two coastal stations near the outflow of the Danube river high input of organic matterdrives strong reductive dissolution of Fe(oxyhydr)oxides (henceforth termed Fe oxides) in...

Activity Ratios, concentrations, calculated and model ages of LIG fossil reef corals from Aqaba, Jordan, supplement to: Obert, J Christina; Scholz, Denis; Felis, Thomas; Lippold, Jörg; Jochum, Klaus Peter; Andreae, Meinrat O (2019): Improved constraints on open-system processes in fossil reef corals by combined Th/U, Pa/U and Ra/Th dating: A case study from Aqaba, Jordan. Geochimica et Cosmochimica Acta, 245, 459-478

J Christina Obert, Denis Scholz, Thomas Felis, Jörg Lippold, Klaus Peter Jochum & Meinrat O Andreae
Here we present 230Th/U, 231Pa/U as well as 226Ra/230Th isotope ratios from five fossil reef corals of Last Interglacial origin from the Gulf of Aqaba, Northern Red Sea. The results show clear evidence for open-system behaviour with strongly elevated δ234U values and U concentrations indicating post-depositional U addition. The combined application of all isotope systems enables us to better constrain the nature and timing of the open-system processes than only based on the 230Th/U data.Quantitative...

Sediment data of different sites in the Ore Estuary sampled in Arpril 2015 and August 2015, supplement to: Lenstra, Wytze K; Egger, Matthias; van Helmond, Niels A G M; Kritzberg, Emma; Conley, Daniel J; Slomp, Caroline P (2018): Large variations in iron input to an oligotrophic Baltic Sea estuary: impact on sedimentary phosphorus burial. Biogeosciences, 15(22), 6979-6996

Wytze K Lenstra, Matthias Egger, Niels A G M van Helmond, Emma Kritzberg, Daniel J Conley & Caroline P Slomp
Estuarine sediments are key sites for removal of phosphorus (P) from rivers and the open sea. Vivianite, an Fe(II)-P mineral, can act as a major sink for P in Fe-rich coastal sediments. In this study, we investigate the burial of P in the Öre Estuary in the northern Baltic Sea. We find much higher rates of P burial at our five study sites (up to ∼ 0.145mol m−2 yr−1) when compared to more southern coastal...

Beach Profile Data for the Elwha River Delta, 2011-2018

Ian Miller
Data were collected using GNSS survey methods, with a differential GPS operating in Real Time Kinematic (RTK) mode. Data from prior to 2013 were typically collected with a Magellan ProMark 3 traditional RKT-DGPS system (i.e. local base station and rover), with the base station sited on survey control markers installed in 1996, with survey control coordinates referenced to NAD83(CORS91). Starting in 2013 survey data were typically collected with an AshTech ProMark 200 RTK-DGPS system connected...

Lead 210, Caesium 137 and grain size of sediment, Carbon 14 and amino acid racemization data of two bivalves from two cores from Palos Verdes Shelf and San Pedro Shelf, California, supplement to: Tomasovych, Adam; Kidwell, Susan M; Alexander, Clark R; Kaufman, Darrell S (2019): Millennial‐scale age offsets within fossil assemblages: Result of bioturbation below the taphonomic active zone and out‐of‐phase production. Paleoceanography and Paleoclimatology

Adam Tomasovych, Susan M Kidwell, Clark R Alexander & Darrell S Kaufman
This collection contains:S1. Summary of radiocarbon-calibrated shell ages of Nuculana taphria and Parvilucina tenuisculpta estimated by amino-acid racemization (with 95% confidence intervals), with water depth (m), sampling year, and D/L of Aspartic and Glutamic acids. Both species were collected at PVL10-50 and OC-50 sites (southern California shelf). S2. Radiocarbon and calibrated ages and D/L of Aspartic and Glutamic acids of the nine specimens of N. taphria and seven specimens of P. tenuisculpta and used to...

Holocene bulk and n-alkane organic geochemical proxies from cores MD05-2905 and GeoB16601-5 from the Northern South China Sea, supplement to: Contreras-Rosales, Lorena Astrid; Jennerjahn, Tim C; Steinke, Stephan; Mohtadi, Mahyar; Schefuß, Enno (2019): Holocene changes in biome size and tropical cyclone activity around the Northern South China Sea. Quaternary Science Reviews, 215, 45-63

Lorena Astrid Contreras-Rosales, Tim C Jennerjahn, Stephan Steinke, Mahyar Mohtadi & Enno Schefuß
The South China Sea (SCS), characterized by a large continental shelf, is located at the edge of the Asian monsoon domain. In this study, two marine sediment cores from the northern SCS (NSCS) continental slope were investigated to construct composite vegetation and precipitation isotopic composition records based on the δ13C and δD values of plant-wax n-alkanes throughout the Holocene (last 11,200 years; i.e. 11.2 ka). The composite δ13Cwax record indicates an overall predominance of C3...

Weather pattern definitions for India and their daily historical classifications (1979 to 2016), supplement to: Neal, Robert; Robbins, Joanne; Dankers, Rutger; Mitra, Ashis; Jayakumar, Amal; Rajagopal, E N; Adamson, George (2020): Deriving optimal weather pattern definitions for the representation of precipitation variability over India. International Journal of Climatology, 40(1), 342-360

Robert Neal, Joanne Robbins, Rutger Dankers, Ashis Mitra, Amal Jayakumar, E N Rajagopal & George Adamson
Mean u- and v- component wind fields at 850-hPa are provided over India for a set of 30 objectively derived weather patterns, which were generated by k-means clustering of daily (1200 UTC) reanalysis fields from ERA-interim between 1979 and 2016. The weather patterns are defined on a 1 x 1 degree resolution grid, which covers the area from 62 degrees west to 98 degrees west and 2 degrees north to 37 degrees north. The boundary...

Registration Year

  • 2019
    458

Resource Types

  • Collection
    458

Affiliations

  • University of Iowa
    2
  • Boston University
    1