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.

黄石公园是地球上地质最活跃的地方之一，其活跃的火山活动、近期的冰川作用和持续的热液活动为科学发现提供了无与伦比的机会。地质、冰川作用和气候之间的相互作用和反馈长期以来塑造了黄石公园的生物历史。气候和地质过程随时间的相对影响仍不清楚，这项调查旨在利用跨学科的方法来更好地了解黄石间歇泉盆地的历史。该项目将包括对学生的培训和博士后研究以及与黄石国家公园合作为公众开发教育材料。该研究有三个主要目标。对黄石下间歇泉盆地内部和附近小湖泊的沉积分析：（1）首次开发黄石千年规模的热液活动历史（从岩性、地球化学和硅藻角度）； （2）评估在多个时间尺度上发生的气候变化与过去的热液活动之间的关系，特别研究热液系统对干旱时期敏感的假设（来自稳定同位素记录和古气候模型模拟）；（3）检查过去的热​​液活动在目前热液景观创造了独特的植被群落（来自花粉、植物化石和木炭）的环境中产生的生态后果，揭示这些联系将增加我们对过去的了解。这些发现还将评估黄石公园间歇泉盆地对过去气候变化的敏感性。该项目将开发新的正式和非正式教育材料，旨在激励学生并向不同的公众受众传达信息——这是黄石公园的主要使命目标。该奖项是 NSF 的法定使命，并被认为值得通过以下方式获得支持：使用基金会的智力价值和更广泛的影响审查标准进行评估。

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.