Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.geogr.msu.ru/structure/labs/notl/personal/Abstracts-1/Taldenkova_Bauch_ea_GloPlaCha_2001.pdf Дата изменения: Mon Sep 27 15:26:29 2010 Дата индексирования: Tue Oct 2 12:50:49 2012 Кодировка: Поисковые слова: m 31

Bauch, H.A., MЭller-Lupp, T., Taldenkova, E., Spielhagen, R.F., Kassens, H., Grootes, P.M., Thiede, J., Heinemeier, J., Petryashov, V.V., 2001. Chronology of the Holocene transgression in Arctic Siberia. Global and Planetary Change, 31, 3-4, 125-139. Abstract
To establish a chronology of the Holocene transgression in Arctic Siberia, a total of 14 sediment cores from the Laptev Sea continental slope and shelf were studied covering the water depth range between 983 and 21 m. The age models of the cores were derived from 119 radiocarbon datings, which were all analyzed on marine biogenic calcite (mainly bivalve shells). The oldest shell sample was found at the slope and dates back to about 15.3 cal. ka, indicating that the time interval investigated starts prior to the onset of the meltwater pulse 1A ( 14.2 cal. ka) when global sea-level rose dramatically. The inundation history was reconstructed mainly on the basis of major changes in average sedimentation rates (ASR), but also other sedimentological parameters were incorporated. A diachronous reduction in ASR from the outer to the inner shelf region is recognized, which was related to the southward migration of the coastline as the primary sediment source. We estimate that the flooding of the 50-, 43-, and 31-m isobaths was completed by approximately 11.1, 9.8, and 8.9 cal. ka, and that Holocene sea-level highstand was approached near 5 cal. ka. Between these time intervals, sea level in the Laptev Sea rose by 5.4, 13.3, and 7.9 mm/year, respectively.

Article Outline
1. Introduction 2. Sedimentary environment, core material, and methods 3. Results 3.1. Reservoir age 3.2. Radiocarbon dating of sediment cores 3.3. Sedimentation at the continental slope 3.4. Sedimentation in the outer shelf region 3.5. Sedimentation in the central shelf region 3.6. Sedimentation in the inner shelf region 4. Depositional environment 5. Time-slice reconstruction 6. Summary Acknowledgements References