Výsledky vyhledávání - "Irena Hajdas"

Akademický článek

Carbon Dating Analysis of Manuscripts Kept in the Central Library of the University of Tehran

Autor: Lili Kordavani, Ali Aghaei, Faranak Bahrololumi, Rasoul Jafarian, Michael J. Marx, Irena Hajdas

Publikováno v: تحقیقات کتابداری و اطلاع‌رسانی دانشگاهی, Vol 56, Iss 3, Pp 63-80 (2022)

Objective: This paper will present and analyzes the results of the carbon dating campaign carried out in the project “Irankoran” at the Central Library of the University of Tehran (hereafter, CLUT). During the last years, the project “Corpus Co

Externí odkaz: https://doaj.org/article/e78bd1f2d24647208f9b7d2e9b5fb3f3

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Dating of Artwork by Radiocarbon

Autor: Johannes van der Plicht, Irena Hajdas

Publikováno v: Analytical Chemistry for the Study of Paintings and the Detection of Forgeries ISBN: 9783030868642

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::39370426b42d3222c1c8855a89168971
https://doi.org/10.1007/978-3-030-86865-9_13

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Terrestrial carbon dynamics through time - insights from downcore radiocarbon dating

Autor: Rienk Smittenberg, Valier Galy, Stefano Bernasconi, Merle Gierga, Axel Birkholz, Irena Hajdas, Lukas Wacker, Negar Haghipour, Camilo Ponton, Timothy Eglinton

Publikováno v: EGUsphere

A relatively small change in the balance of in- and outgoing fluxes between terrestrial Carbon (Cterr) and the atmosphere, sustained over centuries to millennia can change Cterr from a carbon source to a sink. The net carbon balance of any ecosystem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89e03a9d4fa085cfccd68af4ee6e4861

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The Awakening of the Dormant Mount Vettore Fault (2016 Central Italy Earthquake, M w 6.6): Paleoseismic Clues on Its Millennial Silences

Autor: Federica Polpetta, Edoardo Peronace, Paolo Messina, Antonio Galderisi, Irena Hajdas, Paolo Galli, Domenico Pileggi, Biagio Giaccio

Publikováno v: Tectonics (Online) (2019): 1–19. doi:10.1029/2018TC005326
info:cnr-pdr/source/autori:P. Galli, A. Galderisi, E. Peronace, B. Giaccio, I. Hajdas5, P. Messina, D. Pileggi,F. Polpetta/titolo:The Awakening of the Dormant Mount Vettore Fault (2016 Central Italy Earthquake, Mw 6.6): Paleoseismic Clues on Its Millennial Silences/doi:10.1029%2F2018TC005326/rivista:Tectonics (Online)/anno:2019/pagina_da:1/pagina_a:19/intervallo_pagine:1–19/volume

The Mount Vettore normal fault ruptured between August and October 2016, sourcing three earthquakes of Mw 6.2, 6.1, and 6.6. The first one caused the death of 299 people, while the entire sequence reached the highest macroseismic intensity levels in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e8b164db4da592aace13c52a9451f2f
https://doi.org/10.1029/2018tc005326

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Ice-rafted detritus evidence from 40Ar/39Ar ages of individual hornblende grains for evolution of the eastern margin of the Laurentide ice sheet since 43 14Cky

Autor: Sidney R. Hemming, Irena Hajdas

Publikováno v: Quaternary International. :29-43

During the last glacial interval, the North Atlantic ice sheets expanded and contracted in approximate synchronicity with orbitally forced global climate change. Variation in ice rafted detritus content in North Atlantic marine sediment cores record

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e5ede60ff7e27fd3715b8889a1a6cc4
https://doi.org/10.1016/s1040-6182(02)00110-6

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Late glacial diatom accumulation at 9°S in the Indian Ocean

Autor: Georges Bonani, Elizabeth Clark, Warren Beck, Irena Hajdas, Lowell D. Stott, Jean Lynch-Stieglitz, Wallace S. Broecker

Publikováno v: Paleoceanography. 15:348-352

A continuous 10-m-long section consisting of roughly two thirds Ethmodiscus rex (a diatom) and one third mixed planktonic foraminifera was identified in a core from 3800 m depth at 9°S on the Indian Ocean's 90°E Ridge. Radiocarbon dates place the o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::32e8785ae513f67054a25d26ae3afce3
https://doi.org/10.1029/1999pa000439

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Evidence for a reduction in the carbonate ion content of the deep sea during the course of the Holocene

Autor: Irena Hajdas, Georges Bonani, Wallace S. Broecker, Daniel C. McCorkle, Elizabeth Clark, Tsung-Hung Peng

Publikováno v: Paleoceanography. 14:744-752

The paleo carbonate ion proxy proposed by Broecker et al. [1999] is applied in a search for trends in the Holocene acidity of waters in the transition zone between North Atlantic Deep Water and Antarctic Bottom Water (AABW). A clear signal emerges th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fd71fc999e43cee43e92d8cc19b120a6
https://doi.org/10.1029/1999pa900038

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Antiphasing between Rainfall in Africa's Rift Valley and North America's Great Basin

Autor: Wallace S. Broecker, Dorothy M. Peteet, Jo Lin, Irena Hajdas, Elizabeth Clark

Publikováno v: Quaternary Research. 50:12-20

The beginning of the Bølling-Allerød warm period was marked in Greenland ice by an abrupt rise in δ18O, an abrupt drop in dust rain, and an abrupt increase in atmospheric methane content. The surface waters in the Norwegian Sea underwent a simulta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::22409c9bdd60b359fe76c92047ea9eba
https://doi.org/10.1006/qres.1998.1973

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A Reassessment of U-Th and14C Ages for Late-Glacial High-Frequency Hydrological Events at Searles Lake, California

Autor: George I. Smith, Georges Bonani, Wallace S. Broecker, Sidney R. Hemming, Irena Hajdas, Maxwell Kelley, Jo C. Lin, Robert F. Anderson

Publikováno v: Quaternary Research. 49:11-23

U-Th isochron ages of tufas formed on shorelines suggest that the last pluvial event in Lake Lahontan and Searles Lake was synchronous at about 16,500 cal yr B.P. (equivalent to a radiocarbon age of between 14,000 and 13,500 yr B.P.), whereas the tim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::76b021eedfad3ac3b2f07be7568eede1
https://doi.org/10.1006/qres.1997.1949

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Assessing AMS 14C ages of detrital organics from Holocene and late-Pleistocene moraines, east-central Sierra Nevada, California, USA

Autor: Molly M. Pohl, Georges Bonani, Irena Hajdas

Publikováno v: The Holocene. 6:463-467

Obtaining age estimates of moraines which have insufficient carbon for conventional 14C dating may be possible by AMS 14C dating of detrital organic material in the till matrix. Sufficient detrital carbon was available in the till matrix of Holocene

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::541b211ca05dcfddea7405f28dd526ef
https://doi.org/10.1177/095968369600600409

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