Výsledky vyhledávání - "Claus U. Hammer"

Greenland ice core evidence of the 79 AD Vesuvius eruption

Autor: Paola Marianelli, Claus U. Hammer, Marie-Louise Siggaard-Andersen, G. Cozzi, Henrik Clausen, Bo Møllesøe Vinther, Carlo Barbante, Natalie Kehrwald, J. P. Steffensen

Publikováno v: Climate of the Past, Vol 9, Iss 3, Pp 1221-1232 (2013)
Climate of the past
9 (2013): 1221–1232. doi:10.5194/cp-9-1221-2013
info:cnr-pdr/source/autori:Barbante, Carlo; Kehrwald, Natalie M.; Marianelli, Paola; Vinther, Bo M.; Steffensen, Jørgen Peder; Cozzi, Giulio; Hammer, Claus Uffe; Clausen, Henrik Brink; Siggaard-Andersen, Marie Louise/titolo:Greenland ice core evidence of the 79 AD Vesuvius eruption/doi:10.5194%2Fcp-9-1221-2013/rivista:Climate of the past (Print)/anno:2013/pagina_da:1221/pagina_a:1232/intervallo_pagine:1221–1232/volume:9

Volcanic tephra are indepenent age horizons and can synchronize strata of various paleoclimate records including ice and sediment cores. Before such paleoclimate records can be synchronized, it is essential to first confidently identify individual in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4fa39b653afb9c2ab515f2dfbc480df
https://doi.org/10.5194/cp-9-1221-2013

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A tentative chronology for the EPICA Dome Concordia Ice Core

Autor: Jean-Robert Petit, Roberto Udisti, Eric W. Wolff, Jean Jouzel, Claus U. Hammer, Jakob Schwander

Publikováno v: Geophysical Research Letters
Geophysical Research Letters, American Geophysical Union, 2001, 28 (22), pp.4243-4246. ⟨10.1029/2000GL011981⟩
Geophysical Research Letters, 2001, 28 (22), pp.4243-4246. ⟨10.1029/2000GL011981⟩
Schwander, Jakob; Jouzel, Jean; Hammer, Claus U.; Petit, Jean-Robert; Udisti, Roberto; Wolff, Eric (2001). A tentative chronology for the EPICA Dome Concordia ice core. Geophysical Research Letters, 28(22), pp. 4243-4246. American Geophysical Union 10.1029/2000GL011981

International audience; A tentative age scale (EDC1) for the last 45 kyr is established for the new 788‐m EPICA Dome C ice core using a simple ice flow model. The age of volcanic eruptions, the end of the Younger Dryas event, and the estimated dept

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https://doi.org/10.1029/2000gl011981

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Characterization of luminescence properties of insoluble mineral grains extracted from the Greenland Summit GRIP ice core, and their potential for luminescence dating

Autor: Kenneth Lepper, Marie-Louise Siggaard-Andersen, Stephen W.S. McKeever, Niels Agersnap Larsen, Claus U. Hammer

Publikováno v: Radiation Measurements. 33:445-455

We describe several optically stimulated luminescence (OSL) and thermoluminescence (TL) properties of insoluble mineral grains extracted from the Greenland summit GRIP ice core in order to examine the potential of these techniques for age determinati

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https://doi.org/10.1016/s1350-4487(01)00052-x

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Chlorine 36 fallout in the Summit Greenland Ice Core Project ice core

Autor: Hans-Arno Synal, B. Dittrich-Hannen, Sigfus J Johnsen, Claus U. Hammer, Peter W. Kubik, Juerg Beer, Marc J.-F. Suter, S. Baumgartner

Publikováno v: Journal of Geophysical Research: Oceans. 102:26659-26662

The natural cosmogenic radioisotope 36Cl has been measured in the Greenland Ice Core Project ice core from Summit, Greenland. Generally, a good correlation between 36Cl and δ18O was found, even in glacial periods with strong δ18O oscillations. The

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https://doi.org/10.1029/97jc00166

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A comparison of the volcanic records over the past 4000 years from the Greenland Ice Core Project and Dye 3 Greenland ice cores

Autor: Henrik Clausen, Josef Kipfstuhl, Jørgen Peder Steffensen, Dorthe Dahl-Jensen, Christine S. Hvidberg, Claus U. Hammer, Michel Legrand

Publikováno v: Journal of Geophysical Research: Oceans. 102:26707-26723

Since 1980 the electrical conductivity method (ECM) has been used to infer volcanic acid signals in Greenland ice cores. The method reveals the great majority of major volcanic eruptions, including several known from historic records. Subsequent ion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8a095460cb0b50be42560476f93a8313
https://doi.org/10.1029/97jc00587

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Sulfur-containing species (methanesulfonate and SO4) over the last climatic cycle in the Greenland Ice Core Project (central Greenland) ice core

Autor: Sigfus J Johnsen, Claus U. Hammer, H. B. Clausen, M. de Angelis, Robert J. Delmas, Michel Legrand, Joel Savarino

Publikováno v: Journal of Geophysical Research: Oceans. 102:26663-26679

A high-resolution profile covering the last two centuries and a discontinuous study spanning the complete last glacial-interglacial cycle of methanesulfonate (MSA) (CH3SO3−) and sulfate were obtained along Summit (central Greenland) ice cores. MSA

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::98a7653a771946cacc79b1cf72abacd1
https://doi.org/10.1029/97jc01436

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Primary aerosol (sea salt and soil dust) deposited in Greenland ice during the last climatic cycle: Comparison with east Antarctic records

Autor: Michel Legrand, Jørgen Peder Steffensen, H. B. Clausen, M. de Angelis, Claus U. Hammer

Publikováno v: Scopus-Elsevier
University of Copenhagen

Ion chromatography data of Ca, Mg, Cl and Ca and Coulter® counter particle measurements are used to study the cycle of marine and continental primary aerosol reaching Greenland in relation to climatic changes over the last 150 kyr. A detailed compar

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https://doi.org/10.1029/97jc01298

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[Untitled]

Autor: Claus U. Hammer, Chester C. Langway, Henrik Clausen

Publikováno v: Climatic Change. 35:1-15

The 2191 m long ice core recovered at Byrd Station Antarctica in 1968 (BS68) was measured continuously by an electrical conductivity method (ECM). The ECM curve inferes the acidity of seasonal ice layers and major peaks, which identify clearly interm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eab4abb612bf490859a1aa51ded79098
https://doi.org/10.1023/a:1005344225434

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Ash layers from Iceland in the Greenland GRIP ice core correlated with oceanic and land sediments

Autor: Sigfus J Johnsen, Edouard Bard, Claus U. Hammer, Henrik Clausen, Karl Grönvold, Gerard C. Bond, Niels Oskarsson

Publikováno v: Earth and Planetary Science Letters. 135:149-155

Four previously known ash layers (Ash Zones I and II, Saksunarvatn and the Settlement layer) all originating in Iceland, have been identified in the Central Greenland ice core GRIP. This correlation of the ash between the different environments is ac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b53d92f653e248ea5cacc376bf67ebd6
https://doi.org/10.1016/0012-821x(95)00145-3

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The Eem Stable Isotope Record along the GRIP Ice Core and Its Interpretation

Autor: Sigfus J Johnsen, Henrik Clausen, Niels S. Gundestrup, Willi Dansgaard, Claus U. Hammer, Henrik Tauber

Publikováno v: Quaternary Research. 43:117-124

A 3029-m-long deep ice core extending nearly to bedrock has been drilled at the very top of the Greenland ice sheet (Summit) by the Greenland Ice-core Project (GRIP), an international European joint effort organized by the European Science Foundation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d59c57e39ce9186e6d6c6b8d5cc6df3e
https://doi.org/10.1006/qres.1995.1013

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