Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system
Magnetic properties of early Pliocene sediments from IODP Site U1467 (Maldives platform) reveal changes in the monsoon system
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IODP 站点 U1467（马尔代夫平台）的上新世早期沉积物的磁性揭示了季风系统的变化
DOI：
10.1016/j.palaeo.2019.109283
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Lanci L
中科院分区：
文献类型：
--
作者：
Lanci L
报道了国际大洋发现计划(IODP)U1467站位在马尔代夫地台(印度洋)钻探的上新世沉积物的磁性地层学和等温剩磁各向异性研究。359人。磁性地层学提供了上新世早期约5.3 Ma至3.1 Ma的地磁反转的精确记录，提供了生物地层记录稀缺的时间段的详细年龄模式。我们利用等温剩磁各向异性(AIRM)研究了微细磁性颗粒的统计取向，并提供了关于上新世早期海底电流强度和方向的数据。大气记录的海底洋流强度在C3n.1n的顶部显著增加(约4.2 Ma)，海流方向(NE-SW)与现代仪器测量结果一致。由于马尔代夫的底层洋流是由季风驱动的，我们推测4.2 Ma的海底洋流增加可能标志着现代背景的开始，可能与喜马拉雅高原的同时代隆升阶段有关。
We report a study of the magnetic stratigraphy and the anisotropy of isothermal remanent magnetization of Pliocene sediments from International Ocean Discovery Program (IODP) Site U1467 drilled in the Maldives platform (Indian Ocean) during Exp. 359. Magnetic stratigraphy gives a precise record of geomagnetic reversals of the early Pliocene from approximately 5.3 Ma to 3.1 Ma providing a detailed age model in an interval where the biostratigraphic record is scarce. We use the anisotropy of isothermal remanent magnetization (AIRM) to investigate the statistical orientation of fine magnetic particles and provide data on the strength and direction of bottom currents during the early Pliocene. The strength of bottom currents recorded by the AIRM, shows a prominent increase at the top of Chron C3n.1n (about 4.2 Ma), and the current direction (NE - SW) is consistent with that of modern instrumental measurements. Since bottom currents in the Maldives are driven by the monsoon, we speculate that the 4.2 Ma increase of bottom currents could mark the onset of the present-day setting, probably related to the coeval uplift phase of the Himalayan plateau.
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影响因子：
3.9
作者：
Betzler, C.;Eberli, G. P.;Yao, Z.
通讯作者：
Yao, Z.
影响因子：
3.2
作者：
C. Betzler;J. Fürstenau;T. Lüdmann;Christian Hübscher;S. Lindhorst;A. Paul;J. Reijmer;A. Droxler
通讯作者：
C. Betzler;J. Fürstenau;T. Lüdmann;Christian Hübscher;S. Lindhorst;A. Paul;J. Reijmer;A. Droxler
影响因子：
4.6
作者：
Betzler C;Eberli GP;Kroon D;Wright JD;Swart PK;Nath BN;Alvarez-Zarikian CA;Alonso-García M;Bialik OM;Blättler CL;Guo JA;Haffen S;Horozal S;Inoue M;Jovane L;Lanci L;Laya JC;Mee AL;Lüdmann T;Nakakuni M;Niino K;Petruny LM;Pratiwi SD;Reijmer JJ;Reolid J;Slagle AL;Sloss CR;Su X;Yao Z;Young JR
通讯作者：
Young JR
赤道东印度洋次表层纬流的季节和年际变化
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
Gusev O;Nakahara Y;Kanamori Y;Kikawada T;Okuda T;Iskhaq Iskandar;Iskhaq Iskandar;Iskhaq Iskandar;Iskhaq Iskandar;Iskhaq Iskandar;Iskhaq Iskandar;Maddegedara Lalith;Maddegedara Lalith;Iskhaq Iskandar
通讯作者：
Iskhaq Iskandar
碳酸盐岩三角洲漂移：一种新的沉积物漂移类型
影响因子：
2.9
作者：
Lüdmann;Betzler;Eberli;Reolid;Reijmer;Bialik;Alvarez-Zarkikian;Alonso-Garcia;Blatter;Haffen;Horozal;Jovane
通讯作者：
Jovane