Results 31 to 40 of about 386 (139)

An investigation of rapid warm transitions during MIS2 and MIS3 using Greenland ice-core data and the CLIMBER-2 model [PDF]

Annals of Glaciology, 2002
AbstractIn the search for abetter understanding of the dominant mechanisms of the Earth’s climate system, we present a study of rapid warm-climate transitions to Dansgaard– Oeschger events as seen in the ice cores from the Greenland ice sheet. We present a continuous δ18O record from the Greenland Icecore Project (GRIP) core with a resolution of 5 ...
Mogensen, Irene, Johnsen, Sigfus Johann, Ganopolski, A., Rahmstorf, Stefan   +3 more
openaire   +1 more source

Late Pleistocene sedimentary environment reconstruction and evolution in the Houtao Plain

Frontiers in Earth Science, 2023
Reconstructing the Late Pleistocene sedimentary environment history of the Houtao Plain has great significance not only for revealing the evolution of the Yellow River but also for identifying the formation of paleolake and the northern Ulan Buh Desert ...
Fuqiang Li, Hongli Pang, Hongshan Gao
doaj   +1 more source

Investigating the MIS2 Microlithic Assemblage of Umbeli Belli Rockshelter and Its Place Within the Chrono-cultural Sequence of the LSA Along the East Coast of Southern Africa

African Archaeological Review, 2022
AbstractSouth Africa is arguably one of the most studied regions in Stone Age research. There are, however, considerable differences in research intensity with respect to different regions and time periods. While KwaZulu-Natal is an epicenter for Middle Stone Age (MSA) research, the Late Pleistocene LSA record is largely understudied in this region ...
Matthias A. Blessing, Nicholas J. Conard, Gregor D. Bader   +2 more
openaire   +2 more sources

Spatial Distribution Laws and Geological Significances of Paleo-channels Under the Ocean of Southwestern Hainan Island

Haiyang Kaifa yu guanli, 2023
Paleo-channels are one of the geological hazards on the continental shelf. Analyzing the laws of spatial distribution and unearthing the hidden geological significances could provide basis for ocean engineering and disaster prevention and mitigation, and
Kuanghua ZHANG, Fei CHEN, Jialin WANG, Changliang TONG, Xiaohui HAN, Zhoucan ZHONG   +5 more
doaj  

XANES Iron Geochemistry in the Mineral Dust of the Talos Dome Ice Core (Antarctica) and the Southern Hemisphere Potential Source Areas

Condensed Matter, 2018
X-ray absorption near edge structure (XANES) measurements at the Fe K-edge were performed on aeolian dust in the TALos Dome Ice CorE drilling project (TALDICE) ice core drilled in the peripheral East Antarctic plateau, as well as on Southern Hemisphere ...
Valter Maggi, Giovanni Baccolo, Giannantonio Cibin, Barbara Delmonte, Dariush Hampai, Augusto Marcelli   +5 more
doaj   +1 more source

Ground-ice stable isotopes and cryostratigraphy reflect late Quaternary palaeoclimate in the Northeast Siberian Arctic (Oyogos Yar coast, Dmitry Laptev Strait) [PDF]

Climate of the Past, 2017
To reconstruct palaeoclimate and palaeoenvironmental conditions in the northeast Siberian Arctic, we studied late Quaternary permafrost at the Oyogos Yar coast (Dmitry Laptev Strait).
T. Opel, T. Opel, S. Wetterich, H. Meyer, A. Y. Dereviagin, M. C. Fuchs, L. Schirrmeister   +6 more
doaj   +1 more source

Climatic Changes in the Middle and Late Period of the Last Glacial Period in Liaohua Section of Jiujiang, Jiangxi Province Recorded by End-Member Grain Size

Redai dili, 2023
Late Quaternary aeolian sediment sequences are widely distributed in the Poyang Lake area and are good subjects for climate evolution research. However, previous studies have focused mainly on aeolian sediments and less on lacustrine facies and their ...
Li Shiqian, Li Zhiwen, Zhou Wanpeng, Du Dingding, Li Wubiao   +4 more
doaj   +1 more source

Generation cycles in experimental populations of a multivoltine insect

Journal of Animal Ecology, EarlyView.
Although theory suggests various mechanisms by which environmental and ecological factors may drive generational fluctuations, our field‐cage experiment is the first to demonstrate how internal dynamics and external disturbances jointly produce synchronised, large‐scale outbreak cycles.
Takehiko Yamanaka, Yasushi Sato, William A. Nelson, Ottar N. Bjørnstad   +3 more
wiley   +1 more source

Late Quaternary fluvial terrace characteristics and ages of the Pamir‒Tian Shan convergence zone: indications of regional climate change and tectonic uplift

Frontiers in Earth Science
The Pamir‒Tian Shan collision zone, located at the northwestern edge of the Himalaya‒Qingzang orogenic belt, provides a natural laboratory for investigating the development of fluvial terraces controlled by regional climate change and tectonic uplift. In
Jinhua Deng, Jinhua Deng, Tao Li, Jiahui Feng, Jiahui Feng, Li Qian   +5 more
doaj   +1 more source

Application of Multi‐Method Dating for Understanding the Gravettian North of Moravia, Central Europe

Archaeometry, EarlyView.
ABSTRACT This article presents the results of integrating three methods to assess the age of the Upper Palaeolithic site of Pietraszyn 11 (SW Poland), close to the Moravian Gate. Sediment chronology determined using optically stimulated luminescence produced promising, yet ambiguous results (51.0 ± 3.7 to 20.3 ± 0.7 ka).
A. Wiśniewski, B. Bujalska, D. Popović, M. Baca, K. Zarzecka‐Szubińska, A. Lemanik, M. Hein, S. Talamo, P. Moska, H. Fewlass, D. Tokarz, Z. Jary, B. Przybylski, D. Bobak, M. Połtowicz‐Bobak, K. Wertz, A. Nadachowski   +16 more
wiley   +1 more source