Understanding past linkages between hydrothermal activity, climate change, and ecosystem dynamics

了解热液活动、气候变化和生态系统动态之间过去的联系

• 批准号: 2149482
• 负责人: Cathy Whitlock
• 金额: $ 55.93万
• 依托单位: Montana State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-07-15 至 2025-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2149482&HistoricalAwards=false
• 关键词: Understanding; past; linkages; between; hydrothermal

Yellowstone is one of the most geologically dynamic places on Earth, and its active volcanism, recent glaciation and ongoing hydrothermal activity provide unparalleled opportunities for scientific discovery. Interactions and feedbacks between geology, glaciation, and climate have long shaped the biologic history of Yellowstone, but the relative influence of climatic and geologic processes through time remains unclear. This investigation seeks to better understand the history of Yellowstone’s geyser basins using an interdisciplinary approach to examine lake-sediment records and test hypotheses about past hydrothermal activity and environmental change. The project will include training for students and a postdoctoral research and collaboration with Yellowstone National Park to develop educational materials for public audiences.The study has three major objectives that focus on the sedimentary analysis of small lakes within and near the Yellowstone’s Lower Geyser Basin: (1) develop a millennial-scale history of hydrothermal activity in Yellowstone for the first time activity (from lithology, geochemistry and diatoms); (2) evaluate the relationship between climate change—occurring over multiple timescales—and past hydrothermal activity, specifically investigating the hypothesis that hydrothermal systems are sensitive to periods of drought (from stable isotopic records and paleoclimate model simulations); and (3) examine the ecological consequences of past hydrothermal activity in a setting where hydrothermal landscapes create unique vegetation communities at present (from pollen, plant macrofossils and charcoal). Unraveling these connections will increase our understanding of past geo-ecosystem interactions in hydrothermal settings in Yellowstone and around the world and help build a framework for evaluating the paleobiological consequences of volcanic-driven events in deep time. The findings will also assess the sensitivity of Yellowstone’s geyser basins to changes in climate in the past as well as the future. The project will develop new formal and informal educational materials designed to inspire students and inform diverse public audiences—a primary mission goal for Yellowstone.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

黄石是地球上地质上最具动态的地方之一，其活跃的火山，最近的冰川化和正在进行的水热活动为科学发现提供了无与伦比的机会。地质，冰川和气候之间的相互作用和反馈长期以来一直塑造了黄石的生物学史，但是随着时间的流逝，气候和地质过程的相对影响尚不清楚。这项投资旨在通过跨学科的方法来更好地了解黄石间歇泉贝斯的历史，以检查湖泊的记录并检验有关过去氢气活动和环境变化的假设。 The project will include training for students and a postdoctoral research and collaboration with Yellowstone National Park to develop educational materials for public audiences.The study has three major objectives that focus on the sedimentary analysis of small lakes within and near the Yellowstone’s Lower Geyser Basin: (1) develop a millennial-scale history of hydrothermal activity in Yellowstone for the first time activity (from lithology, geochemistry and diatoms); （2）评估气候变化之间的关系（在多个时间尺度上遍及多个时间尺度），以及过去的氢气活动，特别研究了水热系统对干旱时期敏感的假设（来自稳定的同位素记录和古气候模型模拟）； （3）在水热景观中创造出独特的植被群落（来自花粉，植物大化石和木炭）的环境中，检查了过去热液活动的生态后果。揭开这些联系将增加我们对黄石水热环境中过去的地理生态系统相互作用的理解，并有助于建立一个框架，以评估在深层时期火山驱动事件的古生物学后果。这些发现还将评估黄石间歇泉低音对过去以及未来改变气候的敏感性。该项目将开发新的正式和非正式的教育材料，旨在激发学生并为潜水员的公众受众提供信息，这是黄石的主要任务目标。该奖项反映了NSF的法定任务，并通过使用基金会的知识分子优点和更广泛的影响评估审查标准来评估，被认为是珍贵的支持。

项目成果

The dynamic floor of Yellowstone Lake, Wyoming, USA: The last 14 k.y. of hydrothermal explosions, venting, doming, and faulting

美国怀俄明州黄石湖的动态湖底：过去 14 年

• DOI: 10.1130/b36190.1
• 发表时间: 2022
• 期刊: GSA Bulletin
• 作者: Morgan, L.A.;Shanks, W.C.P.;Pierce, K.L.;Iverson, N.;Schiller, C.M.;Brown, S.R.;Zahajska, P.;Cartier, R.;Cash, R.W.;Best, J.L.
• 通讯作者: Best, J.L.

Travertine records climate-induced transformations of the Yellowstone hydrothermal system from the late Pleistocene to the present

石灰华记录了黄石热液系统从晚更新世至今气候引起的转变

• DOI: 10.1130/b37317.1
• 发表时间: 2024
• 期刊: Geological Society of America Bulletin
• 影响因子: 4.9
• 作者: Harrison, Lauren N.;Hurwitz, Shaul;Paces, James B.;Whitlock, Cathy;Peek, Sara;Licciardi, Joseph
• 通讯作者: Licciardi, Joseph

NOAA/WDS Paleoclimatology - Castor and Round Lake, Washington Isotope and Charcoal Data over the past 1,200 Years

NOAA/WDS 古气候学 - Castor 和 Round Lake、华盛顿州过去 1,200 年的同位素和木炭数据

• DOI: 10.25921/04h7-4493
• 发表时间: 2023
• 期刊: NOAA National Centers for Environmental Information
• 作者: Mark, S.Z.;Abbott, M.B.;Steinman, B.A.;Fernandez, A.;Wise, E.K.;Walsh, M.;Whitlock, C.
• 通讯作者: Whitlock, C.

Fire‐produced coarse woody debris and its role in sediment storage on hillslopes

火灾——产生粗木屑及其在山坡沉积物储存中的作用

• DOI: 10.1002/esp.5573
• 发表时间: 2023
• 期刊: Earth Surface Processes and Landforms
• 影响因子: 3.3
• 作者: Adams, Kailey V.;Dixon, Jean L.;Wilcox, Andrew C.;McWethy, Dave
• 通讯作者: McWethy, Dave

Organic layers preserved in ice patches: A new record of Holocene environmental change on the Beartooth Plateau, USA

• DOI: 10.1177/09596836231211877
• 发表时间: 2023-11-29
• 期刊: HOLOCENE
• 影响因子: 2.4
• 作者: Alt，Mio;Puseman，Kathryn;McWethy，David B.
• 通讯作者: McWethy，David B.