X-ray fluorescence (XRF) fingerprinting of Palaeogene deposits in Denmark

Autor: Nicolaj K. Larsen, Kristian B.R. Kristensen, Marie-Louise Siggaard-Andersen, Claus Heilmann-Clausen, Kurt H. Kjær

Publikováno v: GEUS Bulletin, Vol 53, Pp 1-7 (2023)

In this study, we test if cost-efficient X-ray fluorescence (XRF) analyses can be used to fingerprint Palaeogene clay and marl deposits in Denmark. A total of 67 samples from key sites in Denmark have been analysed. Our preliminary results indicate t

Externí odkaz: https://doaj.org/article/8f8069d0977e446bb73e9e734d507599

Ice-core data used for the construction of the Greenland Ice-Core Chronology 2005 and 2021 (GICC05 and GICC21)

Autor: Sune Olander Rasmussen, Dorthe Dahl-Jensen, Hubertus Fischer, Katrin Fuhrer, Steffen Bo Hansen, Margareta Hansson, Christine Schøtt Hvidberg, Ulf Jonsell, Sepp Kipfstuhl, Urs Ruth, Jakob Schwander, Marie-Louise Siggaard-Andersen, Giulia Sinnl, Jørgen Peder Steffensen, Anders M. Svensson, Bo Vinther

We here describe, document, and make available a wide range of data sets used for annual layer identification in ice cores from DYE-3, GRIP, NGRIP, NEEM, and EGRIP. The data stem from detailed measurements performed both on the main deep cores and sh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4825342f409e03e48d93dd8d6fd42955
https://doi.org/10.5194/essd-2022-361

High-resolution aerosol concentration data from the Greenland NorthGRIP and NEEM deep ice cores

Autor: Tobias Erhardt, Matthias Bigler, Urs Federer, Gideon Gfeller, Daiana Leuenberger, Olivia Stowasser, Regine Röthlisberger, Simon Schüpbach, Urs Ruth, Birthe Twarloh, Anna Wegner, Kumiko Goto-Azuma, Takayuki Kuramoto, Helle A. Kjær, Paul T. Vallelonga, Marie-Louise Siggaard-Andersen, Margareta E. Hansson, Ailsa K. Benton, Louise G. Fleet, Rob Mulvaney, Elizabeth R. Thomas, Nerilie Abram, Thomas F. Stocker, Hubertus Fischer

Publikováno v: Erhardt, T, Bigler, M, Federer, U, Gfeller, G, Leuenberger, D, Stowasser, O, Rothlisberger, R, Schupbach, S, Ruth, U, Twarloh, B, Wegner, A, Goto-Azuma, K, Kuramoto, T, Kjaer, H A, Vallelonga, P T, Siggaard-Andersen, M-L, Hansson, M E, Benton, A K, Fleet, L G, Mulvaney, R, Thomas, E R, Abram, N, Stocker, T F & Fischer, H 2022, ' High-resolution aerosol concentration data from the Greenland NorthGRIP and NEEM deep ice cores ', Earth System Science Data, vol. 14, no. 3, pp. 1215-1231 . https://doi.org/10.5194/essd-14-1215-2022
EPIC3Earth System Science Data, 14(3), pp. 1215-1231
Erhardt, Tobias; Bigler, Matthias; Federer, Urs; Gfeller, Gideon; Leuenberger, Daiana; Stowasser, Olivia; Röthlisberger, Regine; Schüpbach, Simon; Ruth, Urs; Twarloh, Birthe; Wegner, Anna; Goto-Azuma, Kumiko; Kuramoto, Takayuki; Kjær, Helle A.; Vallelonga, Paul T.; Siggaard-Andersen, Marie-Louise; Hansson, Margareta E.; Benton, Ailsa K.; Fleet, Louise G.; Mulvaney, Rob; ... (2022). High-resolution aerosol concentration data from the Greenland NorthGRIP and NEEM deep ice cores. Earth System Science Data, 14(3), pp. 1215-1231. Copernicus Publications 10.5194/essd-14-1215-2022

Records of chemical impurities from ice cores enable us to reconstruct the past deposition of aerosols onto polar ice sheets and alpine glaciers. Through this they allow us to gain insight into changes of the source, transport and deposition processe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb221ca7f05d323972a735400573214c

Brief oxygenation events in locally anoxic oceans during the Cambrian solves the animal breathing paradox

Autor: Daniel Olof Persson, Tais W. Dahl, Iben Winther Hougård, Arne Thorshøj Nielsen, Alex Dickson, Søren Husted, Marie-Louise Siggaard-Andersen, Kurt H. Kjær, Niels H. Schovsbo

Publikováno v: Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
Dahl, T, Siggaard-Andersen, M-L, Schovsbo, E H, Persson, D O, Husted, S, Hougard, I W, Dickson, A J, Kjaer, K & Nielsen, A T N 2019, ' Brief oxygenation events in locally anoxic oceans during the Cambrian solves the animal breathing paradox ', Scientific Reports, vol. 9, 11669 . https://doi.org/10.1038/s41598-019-48123-2
Scientific Reports

Oxygen is a prerequisite for all large and motile animals. It is a puzzling paradox that fossils of benthic animals are often found in black shales with geochemical evidence for deposition in marine environments with anoxic and sulfidic bottom waters

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee463be2a61e3ed66abee748e7a082af
http://link.springer.com/article/10.1038/s41598-019-48123-2

Holocene ice margin variations of the Greenland Ice Sheet and local glaciers around Sermilik Fjord, southeast Greenland

Autor: Nicolaj K. Larsen, Anders A. Bjørk, Kurt H. Kjær, Niels J. Korsgaard, Anthony Ruter, Kristian K. Kjeldsen, Marie-Louise Siggaard-Andersen

Publikováno v: Larsen, N K, Siggaard-Andersen, M-L, Bjørk, A A, Kjeldsen, K K, Ruter, A, Korsgaard, N J & Kjær, K H 2021, ' Holocene ice margin variations of the Greenland Ice Sheet and local glaciers around Sermilik Fjord, southeast Greenland ', Quaternary International, vol. 607, pp. 10-21 . https://doi.org/10.1016/j.quaint.2021.06.001

Understanding the long-term difference in the response times of ice sheets, peripheral ice caps and glaciers may provide information about their respective sensitivities to climate change. However, there are only a few places where the history of loc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25830857b00811a16c134d741891ad62
https://curis.ku.dk/ws/files/285714963/1_s2.0_S104061822100327X_main.pdf