Aridity record of the Arabian Peninsula for the last 200 kyr: Environmental magnetic evidence from the western equatorial Indian ocean

Zhou, Liang1,2,3; Jiang, Zhaoxia1,2,3; Larrasoana, Juan C.4,5,6; Li, Sanzhong1,2,3; Liu, Qingsong7; Chen, Liang8,9; Yin, Zhengxin8,9; Liu, Wanxin1,2,3; Guan, Yulong1,2,3; Zhang, Yuzhen1,2,3; Hu, Yuewei1,2,3

2024-10-01

10.1016/j.quascirev.2024.108876

QUATERNARY SCIENCE REVIEWS   影响因子和分区

0277-3791

1873-457X

The evolution of aridity and its forcing mechanisms in the Arabian Peninsula are of significance for better understanding the environmental response of the region to global change and the impact of past climate shifts in human evolution. Paleoclimatic reconstructions for the region are predominantly derived from fragmentary terrestrial records. Here, we present a detailed environmental magnetic record for marine sediments from the western equatorial Indian Ocean, which constitute the terminal sink for eolian material originated from the Arabian Peninsula. The dominant magnetic minerals identified in the studied sediments include magnetite, maghemite, and hematite. The hard isothermal remanent magnetization (HIRM), widely used as a proxy for the abundances of the high coercivity mineral hematite, has been used to track variations in the concentration of Arabian dust over the last 200 kyr. Dust concentrations are lowest during interglacial periods of maximum boreal summer isolation, and coincide with intervals during which lake and fluvial systems developed and speleothems formed across most of southern and central Arabia. Our results point to a sharp decrease in the production of dust due to the expansion of vegetation cover up to 30 degrees N during these periods. West African Monsoon appears to be the major source of increased rainfall across Arabia, while the Indian Summer monsoon likely contributed to enhance rainfall in the south and southeastern parts of the peninsula. Variation in the supply of Arabian dust were also driven by changes in high-latitude ice volume and atmospheric CO2, as indicated by highest dust concentration found during glacial periods. We interpret that the expansion of high-latitude ice sheets increased the global meridional temperature gradient, weakened the monsoon system, and resulted in a more southerly, colder and descending subtropical westerly jet, leading to the retreat of vegetation cover and the enhanced production of dust from the Arabian deserts. Our results highlight a link between the production of Arabian dust and orbital-scale climate variability, including both monsoon and northern hemisphere ice sheets dynamics.

Arabian peninsula Aeolian dust Environmental magnetism Monsoon Hematite

SCI ; EI

英语

其他

National Natural Science Foundation of China["42274089","42121005"] ; Science and Technology Innovation Project of Laoshan Laboratory[LSKJ202204400] ; Outstanding Youth Fund of Shandong Province[ZR2022JQ16] ; Fundamental Research Funds for the Central Universities["202341003","202072001"] ; Taishan Scholars["tsqn202306112","ts20190918","tstp20221112"]

Physical Geography ; Geology

Geography, Physical ; Geosciences, Multidisciplinary

WOS:001293435500001

PERGAMON-ELSEVIER SCIENCE LTD

GEOSCIENCES

Web of Science

1.Ocean Univ China, Coll Marine Geosci, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, MOE,Key Lab Submarine Geosci & Prospecting Tech, Qingdao 266100, Peoples R China
2.Laoshan Natl Lab, Lab Marine Geol, Qingdao 266237, Peoples R China
3.Laoshan Natl Lab, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China
4.CSIC, CN IGME, Zaragoza 50059, Spain
5.Univ Publ Navarra, Dept Ciencias, Pamplona 31006, Spain
6.Univ Publ Navarra, INAMAT 2, Pamplona, Spain
7.Southern Univ Sci & Technol, Ctr Marine Magnetism CM 2, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China
8.South China Sea Marine Survey & Technol Ctr, State Ocean Adm, Guangzhou 510300, Peoples R China
9.Minist Nat Resources, Key Lab Marine Environm Survey Technol & Applicat, Beijing, Peoples R China

Zhou, Liang,Jiang, Zhaoxia,Larrasoana, Juan C.,et al. Aridity record of the Arabian Peninsula for the last 200 kyr: Environmental magnetic evidence from the western equatorial Indian ocean[J]. QUATERNARY SCIENCE REVIEWS,2024,341.

Zhou, Liang.,Jiang, Zhaoxia.,Larrasoana, Juan C..,Li, Sanzhong.,Liu, Qingsong.,...&Hu, Yuewei.(2024).Aridity record of the Arabian Peninsula for the last 200 kyr: Environmental magnetic evidence from the western equatorial Indian ocean.QUATERNARY SCIENCE REVIEWS,341.

Zhou, Liang,et al."Aridity record of the Arabian Peninsula for the last 200 kyr: Environmental magnetic evidence from the western equatorial Indian ocean".QUATERNARY SCIENCE REVIEWS 341(2024).