EAGER: Seismic survey to evaluate the potential of Lake Chalco, Mexico, for continental drilling
EAGER:地震调查评估墨西哥查尔科湖大陆钻探潜力
基本信息
- 批准号:1032589
- 负责人:
- 金额:$ 7.97万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2010
- 资助国家:美国
- 起止时间:2010-09-01 至 2012-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This EAGER grant supports work on seismic reflection profiling in Lake Chalco, at the southern end of the Basin of Mexico, with the ultimate goal of developing a proposal to the International Continental Drilling Program. The Chalco basin, which was drained for agriculture in the 19th and early 20th Centuries, contains up to 500m of lacustrine sediments that have recorded several hundred thousand years (perhaps as much as million years) of subtropical American climate history. The Chalco records provide useful counterpoints to records of Middle American climate from terrestrial sites (e.g. spethelothems from Cave of the Bells, Arizona or lake sediments from Peten Itza, Guatemala or from Valles Caldera, New Mexico) as well as coastal marine settings (e.g. sediments of the Cariaco and Santa Barbara Basins). The climate history of Chalco may be relevant to evolution of the axolotl, an aquatic salamander endemic to Chalco and its neighboring basin that has been used as a 'model organism' in thousands of physiological and biomedical studies. Finally, the seismic survey and sedimentary record provides information relevant to the tectonic and volcanic history of the Basin of Mexico.Paleoclimate records from lacustrine deposits in terrestrial settings typically span the Holocene and only rarely have extended much deeper in time than the Last Glacial Maximum. Recent interest in lake drilling has begun to change this, with successful programs in Bear Lake (US), Valles Caldera (US), Peten Itza (Guatemala), Titicaca (Bolivia/Peru), Malawi (East Africa) and Bosumtwi (Ghana), and El'gygytgyn (Siberia) among others. The climate record from Chalco should provide insights on regional responses to past changes in coupled climate systems. For example, the processes that induce and propagate millennial-scale climate shifts (e.g the Dansgaard-Oeschger and Heinrich events) remain controversial; settling these controversies requires continuous high-resolution climate records from many areas of the planet, including tropical North America, where such information is lacking. In addition, Middle to Late Pleistocene interglacial conditions are of particular interest as possible analogs for the Holocene. Evidence from Antarctic ice cores document significant differences in atmospheric pCO2 and climate change over the Middle Pleistocene, but high-resolution continental records spanning this interval are rare globally and absent in North America. The full Chalco record has the potential to provide unique information that will fill these critical gaps, improving our understanding of our present interglacial and its future course.Broader impactsThis project provides opportunities for graduate and undergraduate student training and takes advantage of ongoing collaborations with Mexican colleagues, fostering collaboration among scientific communities in the U.S. and Mexico.This work obtains records that provide insights on climate and hydrological balance that have implications for resource management and regional planning. The sedimentary archive in Chalco contains information that is directly relevant to one of the most densely populated urban centers on our planet. Mexico City, home to over 17 million inhabitants, is built primarily on lacustrine sediments of the Basin of Mexico that were exposed when waters that fed the lakes were diverted for agriculture after the European conquest. Continued withdrawal of groundwater from aquifers associated with these lacustrine sediments is a major cause of subsidence. Knowledge of past change in hydrological balance will inform our understanding of regional water resource availability.
这项EAGER赠款支持墨西哥盆地南端的Chalco湖的地震反射剖面工作,最终目标是向国际大陆钻探计划提出建议。在19世纪和20世纪初被排干用于农业的中铝盆地,含有高达500米的湖泊沉积物,记录了数十万年(也许多达百万年)的亚热带美洲气候历史。中铝记录提供了有用的对比,以记录中美洲的气候从陆地网站(如spethelothems从钟洞,亚利桑那州或湖泊沉积物从佩滕伊察,危地马拉或从瓦勒斯火山口,新墨西哥州)以及沿海海洋环境(如沉积物的Cariaco和圣巴巴拉盆地)。中铝的气候历史可能与蝾螈的进化有关,蝾螈是中铝及其邻近盆地特有的水生蝾螈,已被用作数千项生理和生物医学研究的“模式生物”。最后,地震勘测和沉积记录提供了与墨西哥盆地的构造和火山历史有关的信息。来自陆地环境中湖泊沉积物的古气候记录通常跨越全新世,只有很少的情况下才能在时间上比末次盛冰期更深。最近对湖泊钻探的兴趣已经开始改变这一点,在熊湖(美国)、Valles Caldera(美国)、Peten Itza(危地马拉)、的的喀卡(玻利维亚/秘鲁)、马拉维(东非)和Bosumtwi(加纳)以及El'gygytgyn(西伯利亚)等地都有成功的项目。中铝的气候记录应该可以提供有关区域对耦合气候系统过去变化的反应的见解。例如,引发和传播千年尺度气候变化的过程(例如Dansgaard-Oeschger和Heinrich事件)仍然存在争议;解决这些争议需要来自地球许多地区的连续高分辨率气候记录,包括热带北美,这些信息缺乏。此外,中更新世至晚更新世间冰期条件作为全新世的可能类似物特别令人感兴趣。来自南极冰芯的证据记录了中更新世大气pCO 2和气候变化的显着差异,但跨越这段时间的高分辨率大陆记录在全球范围内很少见,在北美也不存在。完整的中铝记录有可能提供独特的信息,填补这些关键空白,提高我们对我们现在的间冰期及其未来进程的理解。更广泛的影响该项目为研究生和本科生提供培训机会,并利用与墨西哥同事的持续合作,促进美国和墨西哥科学界之间的合作。这项工作获得的记录提供了对资源管理有影响的气候和水文平衡的见解区域规划。中铝的沉积档案包含与地球上人口最稠密的城市中心之一直接相关的信息。墨西哥城拥有超过1700万居民,主要建在墨西哥盆地的湖泊沉积物上,这些沉积物是在欧洲征服后,为湖泊提供水源的沃茨被转移用于农业时暴露出来的。从与这些湖泊沉积物有关的含水层中持续抽取地下水是沉降的一个主要原因。了解过去水文平衡的变化将有助于我们了解区域水资源的可用性。
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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Erik Brown其他文献
Inorganic geochemistry of lake sediments: A review of analytical techniques and guidelines for data interpretation
湖泊沉积物的无机地球化学:分析技术综述与数据解释指南
- DOI:
10.1016/j.earscirev.2023.104639 - 发表时间:
2024-02-01 - 期刊:
- 影响因子:10.000
- 作者:
Sebastien Bertrand;Rik Tjallingii;Malin E. Kylander;Bruno Wilhelm;Stephen J. Roberts;Fabien Arnaud;Erik Brown;Richard Bindler - 通讯作者:
Richard Bindler
Safe passage for fish: The case for in-stream turbines
鱼类的安全通道:关于河道内涡轮机的案例
- DOI:
10.1016/j.rser.2022.113034 - 发表时间:
2023-03-01 - 期刊:
- 影响因子:16.300
- 作者:
Erik Brown;Samer Sulaeman;Raul Quispe-Abad;Norbert Müller;Emilio Moran - 通讯作者:
Emilio Moran
Erik Brown的其他文献
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{{ truncateString('Erik Brown', 18)}}的其他基金
Graduate Research Fellowship Program (GRFP)
研究生研究奖学金计划(GRFP)
- 批准号:
2240238 - 财政年份:2022
- 资助金额:
$ 7.97万 - 项目类别:
Fellowship Award
Graduate Research Fellowship Program (GRFP)
研究生研究奖学金计划(GRFP)
- 批准号:
1840377 - 财政年份:2018
- 资助金额:
$ 7.97万 - 项目类别:
Fellowship Award
NSFGEO-NERC: Collaborative Research: MexiDrill: Developing a 350,000 year record of climate and environmental change in tropical North America
NSFGEO-NERC:合作研究:MexiDrill:开发北美热带地区 35 万年的气候和环境变化记录
- 批准号:
1803725 - 财政年份:2018
- 资助金额:
$ 7.97万 - 项目类别:
Continuing Grant
MexiDrill: The Basin of Mexico Drilling Program
MexiDrill:墨西哥盆地钻探计划
- 批准号:
1551311 - 财政年份:2016
- 资助金额:
$ 7.97万 - 项目类别:
Standard Grant
Collaborative Research: Facility Support: National Lacustrine Core Facility (LacCore)
合作研究:设施支持:国家湖泊核心设施(LacCore)
- 批准号:
1462347 - 财政年份:2015
- 资助金额:
$ 7.97万 - 项目类别:
Continuing Grant
Collaborative Research: An ultra-high-resolution record of drought, flood, and coupled ocean-atmosphere climate oscillations in Holocene and late Quaternary Californian sediments
合作研究:全新世和晚第四纪加利福尼亚沉积物中干旱、洪水和海洋-大气耦合气候振荡的超高分辨率记录
- 批准号:
1304148 - 财政年份:2013
- 资助金额:
$ 7.97万 - 项目类别:
Standard Grant
IPG: Collaborative Research: A high-resolution analysis of unique paleoenvironmental data from key hominin sites in East Africa
IPG:合作研究:对东非主要古人类遗址的独特古环境数据进行高分辨率分析
- 批准号:
1241530 - 财政年份:2012
- 资助金额:
$ 7.97万 - 项目类别:
Standard Grant
Collaborative Research: Facility Support: National Lacustrine Core Facility (LacCore)
合作研究:设施支持:国家湖泊核心设施(LacCore)
- 批准号:
0949285 - 财政年份:2010
- 资助金额:
$ 7.97万 - 项目类别:
Continuing Grant
SGER: The Chesapeake Bay Region's Response to Late-Cenozoic Isostatic Uplift, Subsidence, and Tectonism
SGER:切萨皮克湾地区对晚新生代均衡隆起、沉降和构造作用的响应
- 批准号:
0917771 - 财政年份:2009
- 资助金额:
$ 7.97万 - 项目类别:
Standard Grant
Pilot Project: Reconstructing tropical North American climate with the sedimentary record of Lake Chalco, Mexico
试点项目:利用墨西哥查尔科湖的沉积记录重建北美热带气候
- 批准号:
0902682 - 财政年份:2009
- 资助金额:
$ 7.97万 - 项目类别:
Standard Grant
相似国自然基金
基于seismic interferometry的海上勘探数据重建方法研究
- 批准号:40904030
- 批准年份:2009
- 资助金额:20.0 万元
- 项目类别:青年科学基金项目
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Evaluation of seismic disaster risk in central Kyushu based on SAR interferometric analysis and geomorphological survey
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规划:CDP:支持维多利亚湖科学钻探的高分辨率地震反射现场调查
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