Collaborative Research: Interactions between Incipient Continental Rifting, Fluvial Systems, and Regional Climate in Southern Africa: The Okavango-Makgadikgadi Complex, Botswana
合作研究:南部非洲早期大陆裂谷、河流系统和区域气候之间的相互作用:博茨瓦纳奥卡万戈-马卡迪卡迪综合体
基本信息
- 批准号:1714754
- 负责人:
- 金额:$ 9.36万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2017
- 资助国家:美国
- 起止时间:2017-08-01 至 2023-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The Okavango Rift Zone (ORZ) and Delta (OD), and the Makgadikgadi Paleo-Megalake (MPL) form adynamic system in northern Botswana, southern Africa, where tectonic activity, climate change,sedimentation, vegetation, fauna, and human influences interact with each other at various spatial andtemporal scales. This award provides support for a multidisciplinary study of the interactions and feedbacks between incipient continental rifting, drainage patterns, and Neogene/Quaternary regional climate in the ORZ-OD-MPL complex. The objectives are to develop: (i) a structural and tectonic model of the ORZ-OD; (ii) chronologies for the evolution of the OD and infilling phases of the MPL; and (iii) histories of drainage basin expansions and contractions of the complex climate/vegetation in the OD-MPL, and the links, or lack thereof, between the ORZ, OD, and MPL. The overarching scientific question is: to what degree tectonics interacted with surface processes and climate in the ORZ-MPL system, and what feedback loops were involved in this interaction to control the environmental evolution of central southern Africa since the Miocene?The PIs will use a combination of seismology and sediment cores to look at the geometry of the rift faults and sediment fill. The material from the cores will additionally be used to establish provenance of the sediment and build climate records. These two datasets from the cores will be used to assess the relative importance of climate (via variable erosion) versus tectonic control (river migration/capture, etc.) on sediment supply. A 2D numerical model will integrate these data to explore the effect of basin asymmetry and sediment loading and how these feedback into basin development via loading and strain localization.
非洲南部博茨瓦纳北方的奥卡万戈裂谷带(ORZ)、三角洲(OD)和马卡迪卡迪古巨湖(MPL)构成了一个由构造活动、气候变化、沉积作用、植被、动物群和人类活动等多种因素在不同时空尺度上相互作用的内陆体系。该奖项为ORZ-OD-MPL复合体中初期大陆裂谷,排水模式和新近纪/第四纪区域气候之间的相互作用和反馈的多学科研究提供了支持。目标是:(i)ORZ-OD的结构和构造模型;(ii)OD和MPL填充阶段的演化年表;(iii)OD-MPL中复杂气候/植被的流域扩张和收缩历史,以及ORZ、OD和MPL之间的联系或缺乏联系。 首要的科学问题是:在多大程度上构造与地表过程和气候的ORZ-MPL系统,以及参与这种相互作用的反馈回路,以控制自中新世以来的环境演变中南部非洲?PI将使用地震学和沉积物岩心相结合的方法来观察裂谷断层和沉积物填充的几何形状。此外,来自岩心的材料将用于确定沉积物的来源和建立气候记录。这两个岩心数据集将用于评估气候(通过可变侵蚀)与构造控制(河流迁移/捕获等)的相对重要性。沉积物供应。二维数值模型将整合这些数据,以探索盆地不对称性和沉积物负荷的影响,以及这些影响如何通过负荷和应变局部化反馈到盆地发展中。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Zhixiong Shen其他文献
High arsenic (As) concentrations in the shallow groundwaters of southern Louisiana: Evidence of microbial controls on As mobilization from sediments
路易斯安那州南部浅层地下水中砷 (As) 浓度较高:微生物控制沉积物中砷迁移的证据
- DOI:
- 发表时间:
2016 - 期刊:
- 影响因子:0
- 作者:
Ningfang Yang;Zhixiong Shen;S. Datta;K. Johannesson - 通讯作者:
K. Johannesson
TEST USING SEDIMENTARY RECORDS TO QUANTIFY EXTREME PALEO-FLOOD: A CASE STUDY OF AN OXBOW LAKE IN SOUTH CAROLINA
使用沉积记录来量化极端古洪水的测试:南卡罗来纳州奥克斯博湖的案例研究
- DOI:
- 发表时间:
2020 - 期刊:
- 影响因子:0
- 作者:
Molly Aeschliman;Zhixiong Shen - 通讯作者:
Zhixiong Shen
The mid-Holocene sea-level change in the Arabian Gulf
全新世中期阿拉伯湾海平面变化
- DOI:
10.1177/09596836221114291 - 发表时间:
2022 - 期刊:
- 影响因子:0
- 作者:
B. Mauz;Zhixiong Shen;M. Alsuwaidi;D. Melini;G. Spada;S. Purkis - 通讯作者:
S. Purkis
Rapid and widespread response of the Lower Mississippi River to eustatic forcing during the last glacial-interglacial cycle
密西西比河下游对末次冰期-间冰期循环期间海平面上升强迫的快速而广泛的响应
- DOI:
10.1130/b30449.1 - 发表时间:
2012 - 期刊:
- 影响因子:0
- 作者:
Zhixiong Shen;T. Törnqvist;W. Autin;K. Straub;B. Mauz - 通讯作者:
B. Mauz
No evidence from the eastern Mediterranean for a MIS 5e double peak sea-level highstand
地中海东部没有 MIS 5e 双峰海平面高位的证据
- DOI:
- 发表时间:
2018 - 期刊:
- 影响因子:2.3
- 作者:
B. Mauz;Zhixiong Shen;Noureddine Elmejdoub;G. Spada - 通讯作者:
G. Spada
Zhixiong Shen的其他文献
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{{ truncateString('Zhixiong Shen', 18)}}的其他基金
Collaborative Research: P2C2: Extreme floods on the lower Mississippi River in the context of late Holocene climatic variability
合作研究:P2C2:全新世晚期气候变化背景下密西西比河下游的极端洪水
- 批准号:
1804799 - 财政年份:2018
- 资助金额:
$ 9.36万 - 项目类别:
Standard Grant
RAPID: Collaborative Research: Using the Hurricane Michael Event Layer for Developing a Paleo-Tempestite Archive at Strandplain Swales, St. Vincent Island, Florida
RAPID:协作研究:使用迈克尔飓风事件图层在佛罗里达州圣文森特岛的 Strandplain Swales 开发古风暴岩档案
- 批准号:
1906114 - 财政年份:2018
- 资助金额:
$ 9.36万 - 项目类别:
Standard Grant
RAPID: Collaborative Research: Sediment and Contaminant Mobilization by Extreme Flooding Associated with Hurricane Florence
RAPID:合作研究:与佛罗伦萨飓风相关的极端洪水造成的沉积物和污染物迁移
- 批准号:
1901818 - 财政年份:2018
- 资助金额:
$ 9.36万 - 项目类别:
Standard Grant
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