8,682 Works

Measurements on the 10m meteorological and turbulence mast during the Arctic field campaign PASCAL in June 2017, supplement to: Egerer, Ulrike; Gottschalk, Matthias; Siebert, Holger; Ehrlich, André; Wendisch, Manfred (2019): The new BELUGA setup for collocated turbulence and radiation measurements using a tethered balloon: first applications in the cloudy Arctic boundary layer. Atmospheric Measurement Techniques, 12(7), 4019-4038

Ulrike Egerer & Holger Siebert
The 10 m meteorological and turbulence mast was operated on an ice floe next to RV Polarstern in the period 4 to 16 June 2017. The measurements were taken during the PASCAL (Physical feedbacks of Arctic planetary boundary level Sea ice, Cloud and AerosoL) campaign. The mast was installed around 150m from the ship, with the coordinates 10.950°E, 81.928°N (measured on 5 June 2017, 19h UTC). The mast was equipped with an ultrasonic anemometer at...

Begin of the rainy season and dry spells in Southern Amazon using rain gauges, supplement to: Leite-Filho, Argemiro Teixeira; de Sousa Pontes, Verônica Yameê; Costa, Marcos Heil (2019): Effects of deforestation on the onset of the rainy season and the duration of dry spells in southern Amazonia. Journal of Geophysical Research-Atmospheres, 124(10), 5268-5281

Argemiro Teixeira Leite-Filho, Verônica Yameê de Sousa Pontes & Marcos Heil Costa
Daily rainfall time series data from 112 rain gauges and a recent yearly 1-km land use dataset covering the period from 1974 to 2012 to evaluate the effects of the extent of deforestation at different spatial scales on the begin of the rainy season (Bi,j,t) and on the duration of dry spell (DSi,j,t) in southern Amazonia.

Measurements of Ice Nucleating Particles in ice core samples from Lomonosovfonna (Svalbard) and Summit (Greenland), supplement to: Hartmann, Markus; Blunier, Thomas; Brügger, Sandra Olivia; Schmale, Julia; Schwikowski, Margit; Vogel, Alexander; Wex, Heike; Stratmann, Frank (2019): Variation of Ice Nucleating Particles in the European Arctic over the Last Centuries. Geophysical Research Letters, 46(7), 4007-4016

Markus Hartmann, Thomas Blunier, Sandra Olivia Brügger, Julia Schmale, Margit Schwikowski, Alexander Vogel, Heike Wex & Frank Stratmann
The ice nucelating ability of samples from two Arctic ice cores was measured. The Lomo09 ice core originates from Lomonosovfonna (Svalbard;78°49'24"N, 17°25'59"E) and the EUROCORE ice core from Summit (Greenland; 72.58°N, 37.64°W). Lomo09 samples come from the time period between 1479 to 1950, EUROCORE samples from the time period between 1734 and 1989.The measurements were performed with the Leipzig Ice Nucleation Array (LINA) and the Ice Nucleation Droplet Array (INDA). LINA and INDA are both...

Geochemistry of marine sediments of the world's major subduction zones, supplement to: Vervoort, Jeff D; Plank, Terry; Prytulak, Julie (2011): The Hf-Nd isotopic composition of marine sediments. Geochimica et Cosmochimica Acta, 75(20), 5903-5926

Jeff D Vervoort, Terry Plank & Julie Prytulak
This paper presents new major and trace-element data and Lu-Hf and Sm-Nd isotopic compositions for representative suites of marine sediment samples from 14 drill sites outboard of the world's major subduction zones. These suites and samples were chosen to represent the global range in lithology, Lu/Hf ratios, and sediment flux in subducting sediments worldwide. The data reported here represent the most comprehensive data set on subducting sediments and define the Hf-Nd isotopic variations that occur...

Detailed tritium data of 3 pits drilled at Vostok station, supplement to: Fourré, Elise; Landais, Amaelle; Cauquoin, Alexandre; Jean-Baptiste, Philippe; Lipenkov, Vladimir Ya; Petit, Jean-Robert (2018): Tritium Records to Trace Stratospheric Moisture Inputs in Antarctica. Journal of Geophysical Research-Atmospheres, 123(6), 3009-3018

Elise Fourré, Amaelle Landais, Alexandre Cauquoin, Philippe Jean-Baptiste, Vladimir Ya Lipenkov & Jean-Robert Petit
Better assessing the dynamic of stratosphere‐troposphere exchange is a key point to improve our understanding of the climate dynamic in the East Antarctica Plateau, a region where stratospheric inputs are expected to be important. Although tritium (³H or T), a nuclide naturally produced mainly in the stratosphere and rapidly entering the water cycle as HTO, seems a first‐rate tracer to study these processes, tritium data are very sparse in this region. We present the first...

The Antarctic ice core chronology (AICC2012)

Lucie Bazin, Amaelle Landais, Bénédicte Lemieux-Dudon, H Toyé Mahamadou Kele, Daniel Veres, Frédéric Parrenin, Patricia Martinerie, Catherine Ritz, Emilie Capron, Vladimir Ya Lipenkov, M-F Loutre, Dominique Raynaud, Bo M Vinther, Anders M Svensson, Sune Olander Rasmussen, Mirko Severi, Thomas Blunier, Markus C Leuenberger, Hubertus Fischer, Valerie Masson-Delmotte, Jérôme A Chappellaz & Eric W Wolff
Abstract of Bazin et al. (2013): An accurate and coherent chronological framework is essential for the interpretation of climatic and environmental records obtained from deep polar ice cores. Until now, one common ice core age scale had been developed based on an inverse dating method (Datice), combining glaciological modelling with absolute and stratigraphic markers between 4 ice cores covering the last 50 ka (thousands of years before present) (Lemieux-Dudon et al., 2010). In this paper,...

High-resolution 10Be concentrations in the NGRIP, EDML and Vostok ice cores and high-resolution dD data in Vostok (5G) during the Laschamp excursion, supplement to: Raisbeck, Grant M; Cauquoin, Alexandre; Jouzel, Jean; Landais, Amaelle; Petit, Jean-Robert; Lipenkov, Vladimir Ya; Beer, Jürg; Synal, Hans-Arno; Oerter, Hans; Johnsen, Sigfus J; Steffensen, Jørgen Peder; Svensson, Anders M; Yiou, Françoise (2017): An improved north–south synchronization of ice core records around the 41 kyr 10Be peak. Climate of the Past, 13(3), 217-229

Grant M Raisbeck, Alexandre Cauquoin, Jean Jouzel, Amaelle Landais, Jean-Robert Petit, Vladimir Ya Lipenkov, Jürg Beer, Hans-Arno Synal, Hans Oerter, Sigfus J Johnsen, Jørgen Peder Steffensen, Anders M Svensson & Françoise Yiou
Using new high resolution 10Be measurements in the NGRIP, EDML and Vostok ice cores, together with previously published data from EDC, we present an improved synchronization between Greenland and Antarctic ice cores during the Laschamp geomagnetic excursion ~ 41 ky ago. We estimate the precision of this synchronization to be ± 20 years, an order of magnitude better than our previous work. We discuss the implications of this new synchronization for making improved estimates of...

Trace-element and U-Pb data of metapelitic apatite during progressive greenschist- to amphibolite-facies Barrovian metamorphism - Central Alps, supplement to: Henrichs, Isadora A; Chew, David M; O'Sullivan, Gary J; Mark, Chris; McKenna, Cora; Guyett, Paul (2019): Trace‐element (Mn‐Sr‐Y‐Th‐REE) and U‐Pb isotope systematics of metapelitic apatite during progressive greenschist‐ to amphibolite‐facies Barrovian metamorphism. Geochemistry, Geophysics, Geosystems

Isadora A Henrichs, David M Chew, Gary J O'Sullivan, Chris Mark, Cora McKenna & Paul Guyett
Supplement to: Trace‐element (Mn‐Sr‐Y‐Th‐REE) and U‐Pb isotope systematics of metapelitic apatite during progressive greenschist‐ to amphibolite‐facies Barrovian metamorphism. Geochemistry, Geophysics, Geosystems, doi: https://doi.org/10.1029/2019GC008359.Sample description and locations are provided in Table 1. Whole-rock major and trace elements are presented in Table 2. Trace and U-Pb apatite data are provided in Table 3, and epidote SEM-EDS data are shown in Table 4.

Data from the EPICA Dome C ice core EDC, supplement to: Augustin, Laurent; Barbante, Carlo; Barnes, Piers R F; Barnola, Jean-Marc; Bigler, Matthias; Castellano, Emiliano; Cattani, Olivier; Chappellaz, Jérôme A; Dahl-Jensen, Dorthe; Delmonte, Barbara; Dreyfus, Gabrielle; Durand, Gael; Falourd, Sonia; Fischer, Hubertus; Flückiger, Jacqueline; Hansson, Margareta E; Huybrechts, Philippe; Jugie, Gérard; Johnsen, Sigfus J; Jouzel, Jean; Kaufmann, Patrik R; Kipfstuhl, Sepp; Lambert, Fabrice; Lipenkov, Vladimir Ya; Littot, Geneviève C; Longinelli, Antonio; Lorrain, Reginald D; Maggi, Valter; Masson-Delmotte, Valerie; Miller, Heinz; Mulvaney, Robert; Oerlemans, Johannes; Oerter, Hans; Orombelli, Giuseppe; Parrenin, Frédéric; Peel, David A; Petit, Jean-Robert; Raynaud, Dominique; Ritz, Catherine; Ruth, Urs; Schwander, Jakob; Siegenthaler, Urs; Souchez, Roland; Stauffer, Bernhard; Steffensen, Jørgen Peder; Stenni, Barbara; Stocker, Thomas F; Tabacco, Ignazio; Udisti, Roberto; van de Wal, Roderik S W; van den Broeke, Michiel R; Wilhelms, Frank; Winther, Jan-Gunnar; Wolff, Eric W; Zucchelli, Mario (2004): Eight glacial cycles from an Antarctic ice core. Nature, 429(6992), 623-628

Laurent Augustin, Carlo Barbante, Piers R F Barnes, Jean-Marc Barnola, Matthias Bigler, Emiliano Castellano, Olivier Cattani, Jérôme A Chappellaz, Dorthe Dahl-Jensen, Barbara Delmonte, Gabrielle Dreyfus, Gael Durand, Sonia Falourd, Hubertus Fischer, Jacqueline Flückiger, Margareta E Hansson, Philippe Huybrechts, Gérard Jugie, Sigfus J Johnsen, Jean Jouzel, Patrik R Kaufmann, Sepp Kipfstuhl, Fabrice Lambert, Vladimir Ya Lipenkov, Geneviève C Littot … & Mario Zucchelli
The Antarctic Vostok ice core provided compelling evidence of the nature of climate, and of climate feedbacks, over the past 420,000 years. Marine records suggest that the amplitude of climate variability was smaller before that time, but such records are often poorly resolved. Moreover, it is not possible to infer the abundance of greenhouse gases in the atmosphere from marine records. Here we report the recovery of a deep ice core from Dome C, Antarctica,...

Sulphur compounds, methane, and phytoplankton during SONNE cruise SO202/2 (Transbrom Sonne), supplement to: Zindler, Cathleen; Bracher, Astrid; Marandino, Christa A; Taylor, Ben J; Torrecilla, Elena; Kock, Annette; Bange, Hermann W (2013): Sulphur compounds, methane, and phytoplankton: interactions along a north–south transit in the western Pacific Ocean. Biogeosciences, 10(5), 3297-3311

Cathleen Zindler, Astrid Bracher, Christa A Marandino, Bettina B Taylor, Elena Torrecilla, Annette Kock & Hermann W Bange
Here we present results of the first comprehensive study of sulphur compounds and methane in the oligotrophic tropical West Pacific Ocean. The concentrations of dimethylsuphide (DMS), dimethylsulphoniopropionate (DMSP), dimethylsulphoxide (DMSO), and methane (CH4), as well as various phytoplankton marker pigments in the surface ocean were measured along a north-south transit from Japan to Australia in October 2009. DMS (0.9 nmol/l), dissolved DMSP (DMSPd, 1.6 nmol/l) and particulate DMSP (DMSPp, 2 nmol/l) concentrations were generally low,...

Observed El Niño conditions in the eastern tropical Pacific in October 2015, supplement to: Stramma, Lothar; Fischer, Tim; Grundle, Damian; Krahmann, Gerd; Bange, Hermann W; Marandino, Christa A (2016): Observed El Niño conditions in the eastern tropical Pacific in October 2015. Ocean Science, 12(4), 861-873

Lothar Stramma, Tim Fischer, Damian Grundle, Gerd Krahmann, Hermann W Bange & Christa A Marandino
A strong El Niño developed in early 2015. Measurements from a research cruise on the RV Sonne in October 2015 near the equator east of the Galapagos Islands and off the shelf of Peru, are used to investigate changes related to El Niño in the upper ocean in comparison with earlier cruises in this region. At the equator at 85°30' W, a clear temperature increase leading to lower densities in the upper 350 m, despite...

Fatty acids, alcohols and hydrocarbons of microbial mats from Lake 2A on Kiritimati Island, supplement to: Bühring, Solveig I; Smittenberg, Rienk H; Sachse, Dirk; Lipp, Julius S; Golubic, S; Sachs, Julian P; Hinrichs, Kai-Uwe; Summons, Roger E (2009): A hypersaline microbial mat from the Pacific Atoll Kiritimati: Insight into composition and carbon fixation using biomarker analyses and a 13C-labeling approach. Geobiology, 7(3), 308 - 323

Solveig I Bühring, Rienk H Smittenberg, Dirk Sachse, Julius S Lipp, S Golubic, Julian P Sachs, Kai-Uwe Hinrichs & Roger E Summons
Modern microbial mats are widely recognized as useful analogs for the study of biogeochemical processes relevant to paleoenvironmental reconstruction in the Precambrian. We combined microscopic observations and investigations of biomarker composition to investigate community structure and function in the upper layers of a thick phototrophic microbial mat system from a hypersaline lake on Kiritimati (Christmas Island) in the Northern Line Islands, Republic of Kiribati. In particular, an exploratory incubation experiment with 13C-labeled bicarbonate was conducted...

A comprehensive analysis of tidal notches in the Mediterranean Sea, supplement to: Antonioli, Fabrizio; Lo Presti, Valeria; Rovere, Alessio; Ferranti, Luigi; Anzidei, Marco; Furlani, Stefano; Mastronuzzi, Giuseppe; Orru, Paolo E; Scicchitano, Giovanni; Sannino, Gianmaria; Spampinato, Cecilia R; Pagliarulo, Rossella; Deiana, Giacomo; de Sabata, Eleonora; Sansò, Paolo; Vacchi, Matteo; Vecchio, Antonio (2015): Tidal notches in Mediterranean Sea: a comprehensive analysis. Quaternary Science Reviews, 119, 66-84

Fabrizio Antonioli, Valeria Lo Presti, Alessio Rovere, Luigi Ferranti, Marco Anzidei, Stefano Furlani, Giuseppe Mastronuzzi, Paolo E Orru, Giovanni Scicchitano, Gianmaria Sannino, Cecilia R Spampinato, Rossella Pagliarulo, Giacomo Deiana, Eleonora de Sabata, Paolo Sansò, Matteo Vacchi & Antonio Vecchio
Recent works (Evelpidou et al., 2012) suggest that the modern tidal notch is disappearing worldwide due sea level rise over the last century. In order to assess this hypothesis, we measured modern tidal notches in several of sites along the Mediterranean coasts. We report observations on tidal notches cut along carbonate coasts from 73 sites from Italy, France, Croatia, Montenegro, Greece, Malta and Spain, plus additional observations carried outside the Mediterranean. At each site, we...

Carbonate compensation depth (CCD) reconstruction of the equatorial Pacific, supplement to: Pälike, Heiko; Lyle, Mitchell W; Nishi, Hiroshi; Raffi, Isabella; Ridgwell, Andy; Gamage, Kusali; Klaus, Adam; Acton, Gary D; Anderson, Louise; Backman, Jan; Baldauf, Jack G; Beltran, Catherine; Bohaty, Steven M; Bown, Paul R; Busch, William H; Channell, James E T; Chun, Cecily O J; Delaney, Margaret Lois; Dewang, Pawan; Dunkley Jones, Tom; Edgar, Kirsty M; Evans, Helen F; Fitch, Peter; Foster, Gavin L; Gussone, Nikolaus; Hasegawa, Hitoshi; Hathorne, Ed C; Hayashi, Hiroki; Herrle, Jens O; Holbourn, Ann; Hovan, Steven A; Hyeong, Kiseong; Iijima, Koichi; Ito, Takashi; Kamikuri, Shin-Ichi; Kimoto, Katsunori; Kuroda, Junichiro; Leon-Rodriguez, Lizette; Malinverno, Alberto; Moore, Theodore C; Murphy, Brandon; Murphy, Daniel P; Nakamur, Hideto; Ogane, Kaoru; Ohneiser, Christian; Richter, Carl; Robinson, Rebecca S; Rohling, Eelco J; Romero, Oscar E; Sawada, Ken; Scher, Howie D; Schneider, Leah; Sluijs, Appy; Takata, Hiroyuki; Tian, Jun; Tsujimoto, Akira; Wade, Bridget S; Westerhold, Thomas; Wilkens, Roy H; Williams, Trevor; Wilson, Paul A; Yamamoto, Yuhji; Yamamoto, Shinya; Yamazaki, Toshitsugu; Zeebe, Richard E (2012): A Cenozoic record of the equatorial Pacific carbonate compensation depth. Nature, 488, 609-614

Heiko Pälike, Mitchell W Lyle, Hiroshi Nishi, Isabella Raffi, Andy Ridgwell, Kusali Gamage, Adam Klaus, Gary D Acton, Louise Anderson, Jan Backman, Jack G Baldauf, Catherine Beltran, Steven M Bohaty, Paul R Bown, William H Busch, James E T Channell, Cecily O J Chun, Margaret Lois Delaney, Pawan Dewang, Tom Dunkley Jones, Kirsty M Edgar, Helen F Evans, Peter Fitch, Gavin L Foster, Nikolaus Gussone … & Richard E Zeebe
Atmospheric carbon dioxide concentrations and climate are regulated on geological timescales by the balance between carbon input from volcanic and metamorphic outgassing and its removal by weathering feedbacks; these feedbacks involve the erosion of silicate rocks and organic-carbon-bearing rocks. The integrated effect of these processes is reflected in the calcium carbonate compensation depth, which is the oceanic depth at which calcium carbonate is dissolved. Here we present a carbonate accumulation record that covers the past...

Export of algal biomass from the melting Arctic sea ice, supplement to: Boetius, Antje; Albrecht, Sebastian; Bakker, Karel; Bienhold, Christina; Felden, Janine; Fernández-Méndez, Mar; Hendricks, Stefan; Katlein, Christian; Lalande, Catherine; Krumpen, Thomas; Nicolaus, Marcel; Peeken, Ilka; Rabe, Benjamin; Rogacheva, Antonina; Rybakova, Elena; Somavilla Cabrillo, Raquel; Wenzhöfer, Frank; ARK-XXVII/3 Shipboard Scientific Party (2013): Export of algal biomass from the melting Arctic sea ice. Science, 339(6126), 1430-1432

Antje Boetius, Sebastian Albrecht, Karel Bakker, Christina Bienhold, Janine Felden, Mar Fernández-Méndez, Stefan Hendricks, Christian Katlein, Catherine Lalande, Thomas Krumpen, Marcel Nicolaus, Ilka Peeken, Benjamin Rabe, Antonina Rogacheva, Elena Rybakova, Raquel Somavilla Cabrillo, Frank Wenzhöfer & ARK-XXVII/3 Shipboard Scientific Party
In the Arctic, under-ice primary production is limited to summer months and is not only restricted by ice thickness and snow cover but also by the stratification of the water column, which constrains nutrient supply for algal growth. RV Polarstern visited the ice-covered Eastern Central basins between 82 to 89°N and 30 to 130°E in summer 2012 when Arctic sea ice declined to a record minimum. During this cruise, we observed a widespread deposition of...

Paleointensity record of Site 320-U1336, supplement to: Ohneiser, Christian; Acton, Gary D; Channell, James E T; Wilson, Gary S; Yamamoto, Yuhji; Yamazaki, Toshitsugu (2013): A middle Miocene Relative Paleointensity Record from the Equatorial Pacific. Earth and Planetary Science Letters, 374, 227-238

Christian Ohneiser, Gary D Acton, James E T Channell, Gary S Wilson, Yuhji Yamamoto & Toshitsugu Yamazaki
We present a high-resolution magnetostratigraphy and relative paleointensity (RPI) record derived from the upper 85 meters of IODP Site U1336, an equatorial Pacific early to middle Miocene succession recovered during Expedition 320/321. The magnetostratigraphy is well resolved with reversals typically located to within a few centimeters resulting in a well-constrained age model. The lowest normal polarity interval, from 85 to 74.87 meters, is interpreted as the upper part of Chron C6n (18.614-19.599 Ma). Another 33...

Benthic and planktic foraminiferal stable isotope record and coccolith abundance spanning the last 500,000 years of ODP Hole 121-758C, supplement to: Bolton, Clara T; Chang, Liao; Clemens, Steven C; Kodama, Kazuto; Ikehara, Minoru; Medina-Elizalde, Martín; Paterson, Greig A; Roberts, Andrew P; Rohling, Eelco J; Yamamoto, Yuhji; Zhao, Xiang (2013): A 500,000 year record of Indian summer monsoon dynamics recorded by eastern equatorial Indian Ocean upper water-column structure. Quaternary Science Reviews, 77, 167-180

Clara T Bolton, Liao Chang, Steven C Clemens, Kazuto Kodama, Minoru Ikehara, Martín Medina-Elizalde, Greig A Paterson, Andrew P Roberts, Eelco J Rohling, Yuhji Yamamoto & Xiang Zhao
The Indian Summer Monsoon (ISM) is an inter-hemispheric and highly variable ocean-atmosphere-land interaction that directly affects the densely populated Indian subcontinent. Here, we present new records of palaeoceanographic variability that span the last 500,000 years from the eastern equatorial Indian Ocean, a relatively under-sampled area of ISM influence. We have generated carbon and oxygen stable isotope records from three foraminiferal species from Ocean Drilling Program Site 758 (5°N, 90°E) to investigate the oceanographic history of...

Synthesis dataset of physical and ecosystem properties from pan-arctic wetland sites using peat core analysis, supplement to: Treat, Claire C; Jones, Miriam C; Camill, Philip; Gallego-Sala, Angela; Garneau, Michelle; Harden, Jennifer W; Hugelius, Gustaf; Klein, Eric S; Kokfelt, Ulla; Kuhry, Peter; Loisel, Julie; Mathijssen, Paul J H; O'Donnell, Jonathan A; Oksanen, Pirita O; Ronkainen, Tiina M; Sannel, A Britta K; Talbot, Julie; Tarnocai, Charles; Väliranta, Minna (2016): Effects of permafrost aggradation on peat properties as determined from a pan-Arctic synthesis of plant macrofossils. Journal of Geophysical Research-Biogeosciences, 121(1), 78-94

Claire C Treat, Miriam C Jones, Philip Camill, Angela Gallego-Sala, Michelle Garneau, Jennifer W Harden, Gustaf Hugelius, Eric S Klein, Ulla Kokfelt, Peter Kuhry, Julie Loisel, Paul J H Mathijssen, Jonathan A O'Donnell, Pirita O Oksanen, Tiina M Ronkainen, A Britta K Sannel, Julie Talbot, Charles Tarnocai & Minna Väliranta
Permafrost dynamics play an important role in high-latitude peatland carbon balance and are key to understanding the future response of soil carbon stocks. Permafrost aggradation can control the magnitude of the carbon feedback in peatlands through effects on peat properties. We compiled peatland plant macrofossil records for the northern permafrost zone (515 cores from 280 sites) and classified samples by vegetation type and environmental class (fen, bog, tundra and boreal permafrost, thawed permafrost). We examined...

Raw X-ray fluorescence (XRF) scannings and radiocarbon age of sediment cores GeoB8323-2, and GeoB8331-4, supplement to: Hahn, Annette; Compton, John S; Meyer-Jacob, Carsten; Kirsten, Kelly L; Lucassen, Friedrich; Mayo, Manuel Pérez; Schefuß, Enno; Zabel, Matthias (2016): Holocene paleo-climatic record from the South African Namaqualand mudbelt: A source to sink approach. Quaternary International, 404, 121-135

Annette Hahn, John S Compton, Carsten Meyer-Jacob, Kelly L Kirsten, Friedrich Lucassen, Manuel Pérez Mayo, Enno Schefuß & Matthias Zabel
Variations in the sediment input to the Namaqualand mudbelt during the Holocene are assessed using an integrative terrestrial to marine, source to sink approach. Geochemical and Sr and Nd isotopic signatures are used to distinguish fluvial sediment source areas. Relative to the sediments of the Olifants River, craton outcrops in the northern Orange River catchment have a more radiogenic Sr and a more unradiogenic Nd isotopic signature. Furthermore, upper Orange River sediments are rich in...

Geochemistry and grain-size of sediment core PC29A, Quitralco Fjord, Chilean Patagonia, supplement to: Bertrand, Sebastien; Hughen, Konrad A; Sepúlveda, Julio; Pantoja, Silvio (2014): Late Holocene covariability of the southern westerlies and sea surface temperature in Northern Chilean Patagonia. Quaternary Science Reviews, 105, 195-208

Sebastien Bertrand, Konrad A Hughen, Julio Sepúlveda & Silvio Pantoja
The climate of Chilean Patagonia is strongly influenced by the southern westerlies, which control the amount and latitudinal distribution of precipitation in the southern Andes. In austral summer, the Southern Westerly Wind Belt (SWWB) is restricted to the high latitudes. It expands northward in winter, which results in a strong precipitation seasonality between 35 and 45°S. Here, we present a new precipitation seasonality proxy record from Quitralco fjord (46°S), where relatively small latitudinal shifts in...

Environmental conditions, macrozoobenthos abundance and biomass from three expeditions to the Central Arctic Ocean, supplement to: Vedenin, Andrey; Gusky, Manuela; Gebruk, Andrey V; Kremenetskaia, Antonina; Rybakova, Elena; Boetius, Antje (2018): Spatial distribution of benthic macrofauna in the Central Arctic Ocean. PLoS ONE, 13(10), e0200121

Andrey Vedenin, Manuela Gusky, Andrey V Gebruk, Antonina Kremenetskaia, Elena Rybakova & Antje Boetius
Permanent sea-ice cover and low primary productivity in the mostly ice-covered Central Arctic ocean basins result in significantly lower biomass and density of macrobenthos in the abyssal plains compared to the continental slopes. However, little is known on bathymetric and regional effects on the macrobenthos diversity. This study synthesizes new and available macrobenthos data to provide a baseline for future studies of the effects of Arctic change on macrofauna community composition in the Arctic basins....

Geochemistry of ODP Sites 123-765 and 123-766, supplement to: Heggie, David T; Boreham, C J; Summons, Roger E (1992): Biomarker and pyrolysis geochemistry of organic matter from Argo and Gascoyne Abyssal Plain sediments, northeastern Indian Ocean. In: Gradstein, FM; Ludden, JN; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 123, 215-224

David T Heggie, C J Boreham & Roger E Summons
The sediments of the Argo and Gascoyne abyssal plains are generally lean in organic matter, are immature, and contain hydrocarbons trapped during sediment deposition rather than those generated during sediment catagenesis. TOC concentrations in the Argo Abyssal Plain Cenozoic sediments are 0.5 wt%, and organic matter appears to be from mixed marine and reworked, degraded, organic matter sources, with the latter being contributed by turbidity flows from the nearby continental margin. TOC concentrations within the...

Geochemical compositions (XRF, LA-ICP-MS, EMPA) and bulk magnetic properties of volcanic rocks used for mapping in the northern Semail ophiolite (Oman)., supplement to: Belgrano, Thomas M; Diamond, Larryn W; Vogt, Yves; Biedermann, Andrea R; Gilgen, Samuel A; Al-Tobi, Khalid (2019): A revised map of volcanic units in the Oman ophiolite: insights into the architecture of an oceanic proto-arc volcanic sequence. Solid Earth, 10(4), 1181-1217

Thomas M Belgrano, Larryn W Diamond, Yves Vogt, Andrea R Biedermann, Samuel A Gilgen & Khalid Al-Tobi
Lava, dyke and volcanic glass samples from across the northern Semail ophiolite were collected to provide references for geological mapping of the Semail volcanic units. These samples were analysed by various geochemical means to assign them to a volcanic unit. In addition, the bulk rock magnetic properties of a subset of these samples were determined to aid interpretation of existing aeromagnetic data. The whole-rock major element and select trace element (Ba, Sr, Zr, Y, Zn,...

Seafloor megafauna in the Central Arctic during POLARSTERN cruise PS80 (ARK-XXVII/3, IceArc) to the Central Arctic Ocean in August and September 2012, supplement to: Rybakova, Elena; Kremenetskaia, Antonina; Vedenin, Andrey; Boetius, Antje; Gebruk, Andrey V (2019): Deep-sea megabenthos communities of the Eurasian Central Arctic are influenced by ice-cover and sea-ice algal falls. PLoS ONE, 14(7), e0211009

Elena Rybakova, Antonina Kremenetskaia, Andrey Vedenin, Antje Boetius & Andrey V Gebruk
Quantitative camera surveys of benthic megafauna were carried out during the expedition ARK-XXVII/3 to the Eastern Central Arctic basins with the research icebreaker Polarstern in summer 2012 (2 August-29 September). Nine transects were performed for the first time in deep-sea areas previously fully covered by ice, four of them in the Nansen Basin (3571-4066m) and five in the Amundsen Basin (4041-4384m). At seven of these stations benthic Agassiz trawls were taken near the camera tracks...

Widespread global peatland establishment and persistence for the last 130,99 years, supplement to: Treat, Claire C; Kleinen, Thomas; Broothaerts, Nils; Dalton, April S; Dommain, René; Douglas, Thomas A; Drexler, Judith; Finkelstein, Sarah A; Grosse, Guido; Hope, Geoffrey; Hutchings, Jack A; Jones, Miriam C; Kuhry, Peter; Lacourse, Terri; Lähteenoja, Outi; Loisel, Julie; Notebaert, Bastiaan; Payne, Richard J; Peteet, Dorothy M; Sannel, A Britta K; Stelling, Jonathan; Strauss, Jens; Swindles, Graeme; Talbot, Julie; Tarnocai, Charles; Verstraeten, Gert; Williams, Christopher J; Xia, Zhengyu; Yu, Zicheng; Väliranta, Minna; Hättestrand, Martina; Alexanderson, Helena; Brovkin, Victor (2019): Widespread global peatland establishment and persistence over the last 130,000 y. Proceedings of the National Academy of Sciences

Claire C Treat, Nils Broothaerts, April S Dalton, René Dommain, Tom Douglas, Judith Drexler, Sarah A Finkelstein, Guido Grosse, Geoffrey Hope, Jack A Hutchings, Miriam C Jones, Thomas Kleinen, Peter Kuhry, Terri Lacourse, Outi Lähteenoja, Julie Loisel, Bastiaan Notebaert, Richard J Payne, Dorothy M Peteet, A Britta K Sannel, Jonathan Stelling, Jens Strauss, Graeme Swindles, Julie Talbot, Charles Tarnocai … & Victor Brovkin
We present the first synthesis of global peatland extent through the last glacial cycle (130 ka) based on >975 detailed stratigraphic descriptions from exposures, soil pits, and sediment cores. Buried peats are defined as organic-rich sediments overlain by mineral sediments. Also included are deposits rich in wetland macrofossils indicated a local peatland environment.The dataset includes location (lat/long), chronologic information (when available), a description of the buried peat sediment, overlying and underlying sediments, whether geochemical information...

Registration Year

  • 2005
    1
  • 2006
    118
  • 2007
    136
  • 2008
    530
  • 2009
    702
  • 2010
    983
  • 2011
    918
  • 2012
    1,232
  • 2013
    1,062
  • 2014
    453
  • 2015
    665
  • 2016
    505
  • 2017
    636
  • 2018
    469
  • 2019
    271

Resource Types

  • Collection
    8,682