Results 41 to 50 of about 1,604 (171)

Transition of Glacial Regimes Recorded at IODP Site U1524 in the Ross Sea, Antarctica, Over the Last 800 Thousand Years

Paleoceanography and Paleoclimatology, Volume 41, Issue 10, October 2026.
Abstract Reconstructing past interactions between the West Antarctic Ice Sheet (WAIS) and changing environmental conditions in the Ross Sea region can help determine long‐term WAIS stability. Existing sedimentary records reveal changes to oceanography, sea ice and ice sheet extent over the glacial‐interglacial cycles of the last ∼800 kyr.
J. W. Marschalek, T. van de Flierdt, M. O. Patterson, G. Grant, S. Kim, W. Xiao, Q. Li, G. Cortese, S. Bombard, R. M. Leckie, H. Ishii, T. van Peer, C. Xuan, S. Sugisaki, J. Müller, D. Kaufman, D. K. Kulhanek, K. J. Licht, S. R. Hemming, O. Seki, E. Colizza, F. Torricella, J. Gales, B. W. Romans, N. Varela, L. De Santis, R. M. McKay   +26 more
wiley   +1 more source

Biomarkers (GDGT) of sediment core POS362-2_33

, 2014
Biomarkers (GDGT) of sediment core POS362 ...
Schouten, Stefan, Cécile L Blanchet (6976304), Blanchet, Cécile L, Frank, Martin, Stefan Schouten (6885260), Martin Frank (7482416)   +5 more
core   +1 more source

Membrane homeoviscous adaptation in the piezo-hyperthermophilic archaeon Thermococcus barophilus

Frontiers in Microbiology, 2015
The archaeon Thermococcus barophilus, one of the most extreme members of hyperthermophilic piezophiles known thus far, is able to grow at temperatures up to 103°C and pressures up to 80MPa. We analyzed the membrane lipids of T. barophilus by HPLC-MS as a
Anaïs eCario, Vincent eGrossi, Philippe eSchaeffer, Philippe M Oger   +3 more
doaj   +1 more source

Identification of a protein responsible for the synthesis of archaeal membrane-spanning GDGT lipids

Nature Communications, 2022
The cell membranes of many archaea contain characteristic membrane-spanning lipids known as glycerol dibiphytanyl glycerol tetraethers. Here, Zeng et al.
Zhirui Zeng, Huahui Chen, Huan Yang, Yufei Chen, Wei Yang, Xi Feng, Hongye Pei, Paula V. Welander   +7 more
doaj   +1 more source

Variation of Isoprenoid GDGTs in the Stratified Marine Water Column: Implications for GDGT-Based TEX86 Paleothermometry

Frontiers in Marine Science, 2021
Isoprenoid glycerol dialkyl glycerol tetraethers (isoGDGTs) derived from archaea are lipid biomarkers that exhibit high sensitivity to changes in water temperature, leading to the widespread application of the isoGDGT-based tetraether index of 86 carbon ...
Jinqiang Guo, Jinqiang Guo, Jinqiang Guo, Jinqiang Guo, Huamao Yuan, Huamao Yuan, Huamao Yuan, Huamao Yuan, Jinming Song, Jinming Song, Jinming Song, Jinming Song, Baoxiao Qu, Baoxiao Qu, Baoxiao Qu, Baoxiao Qu, Jianwei Xing, Jianwei Xing, Jianwei Xing, Jianwei Xing, Qidong Wang, Qidong Wang, Qidong Wang, Qidong Wang, Xuegang Li, Xuegang Li, Xuegang Li, Xuegang Li, Liqin Duan, Liqin Duan, Liqin Duan, Liqin Duan, Ning Li, Ning Li, Ning Li, Ning Li, Yingxia Wang, Yingxia Wang, Yingxia Wang   +38 more
doaj   +1 more source

Ecological and Hydrological Modulation of Land Surface Temperature in the East Asian Monsoon Margin During Pliocene‐Pleistocene Global Cooling

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract The response of terrestrial climate to future warming remains debated. The Pliocene, with CO2 levels similar to today, is an important analog for the future. The East Asian monsoon marginal region is one of the most climate sensitive regions on Earth. Based on contemporaneous aeolian sediments and aquatic‐influenced alluvial sediments from the
Chen Chen, Hanzhi Zhang, Huayu Lu, Cheng Zhao, Yuqiang Zeng, Jian Yu   +5 more
wiley   +1 more source

(Appendix 1) CL- and IPL-GDGT concentrations in surface sediments of the Arabian Sea

, 2017
(Appendix 1) CL- and IPL-GDGT concentrations in surface sediments of the Arabian ...
Sabine K Lengger (8006516), Schouten, Stefan, Ellen C Hopmans (6975590), Lengger, Sabine K, Jaap S Sinninghe Damsté (6885257), Hopmans, Ellen C, Stefan Schouten (6885260), Sinninghe Damsté, Jaap S   +7 more
core   +1 more source

Archaeal community composition in Holocene methane pockmarks of the Gdańsk Basin (Baltic Sea, Poland): insights from tetraether lipids and 16S rRNA analysis [PDF]

Biogeosciences
Methane pockmarks and shallow gas systems are prominent geomorphological features in the Baltic Sea that act as hotspots of microbial activity. In the Gdańsk Basin, pockmarks vary in gas-seepage intensity and in the extent of freshened porewater ...
I. De Mey-Śnieżyńska, M. Słowakiewicz, F. Peterse, A. Brodecka-Goluch, A. Borkowski, K. Łukawska-Matuszewska   +5 more
doaj   +1 more source

A Lacustrine Biomarker Record From Rebun Island Reveals a Warm Summer Climate in Northern Japan During the Early Middle Holocene Due to a Stronger North Pacific High

Frontiers in Earth Science, 2021
The summer climate of northern Japan since the last glacial period has likely been determined by atmospheric and oceanic dynamics, such as changes in the North Pacific High, the position of the westerlies, the Kuroshio Current, the Tsushima Warm Current (
Masanobu Yamamoto, Masanobu Yamamoto, Fangxian Wang, Tomohisa Irino, Tomohisa Irino, Kenta Suzuki, Kazuyoshi Yamada, Tsuyoshi Haraguchi, Katsuya Gotanda, Hitoshi Yonenobu, Xuan-Yu Chen, Xuan-Yu Chen, Pavel Tarasov   +12 more
doaj   +1 more source

Sedimentary lycopane/n‐C31 ratio as a proxy for bottom water hypoxia in coastal ocean

Limnology and Oceanography Letters, Volume 11, Issue 5, September 2026.
Abstract Bottom‐water hypoxia on continental shelves is intensifying under climate change and eutrophication, yet long‐term records remain scarce. Here we show that the sedimentary lycopane/n‐C31 ratio reliably records bottom‐water oxygenation in the seasonally hypoxic Yangtze River Estuary.
Qingnan Song, Huamao Yuan, Jinming Song, Guiling Zhang, Fengmin Pan, Xuegang Li, Liqin Duan   +6 more
wiley   +1 more source