Climate-induced variations of geyser periodicity in Yellowstone National Park, USA
Climate-induced variations of geyser periodicity in Yellowstone National Park, USA
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气候引起的美国黄石国家公园间歇泉周期性变化
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
H. Heasler
中科院分区：
文献类型：
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作者：
S. Hurwitz;Ashish Kumar;R. Taylor;H. Heasler
美国黄石国家公园的间歇泉每年吸引数以百万计的游客，其喷发动力学已成为世纪以来广泛研究的主题。虽然与间歇泉喷发动力学相关的许多基本方面已经阐明，外部强迫（地球潮汐，气压和降水）和间歇泉喷发间隔（GEI）之间的关系仍然是一个持续争论的问题。我们提出了新的仪器GEI数据和证明，通过详细的时间序列分析，间歇泉响应长期降水趋势和季节性水文循环。对长期趋势的反应反映在麦迪逊河GEI和流量的年平均值之间的负相关性。这种响应可能与下伏热液储层的长期压力变化有关。我们与季节性GEI延长融雪补给。
The geysers of Yellowstone National Park, United States, attract millions of visitors each year, and their eruption dynamics have been the subject of extensive research for more than a century. Although many of the fundamental aspects associated with the dynamics of geyser eruptions have been elucidated, the relationship between external forcing (Earth tides, barometric pressure, and precipitation) and geyser eruption intervals (GEIs) remains a matter of ongoing debate. We present new instrumental GEI data and demonstrate, through detailed time-series analysis, that geysers respond to both long-term precipitation trends and to the seasonal hydrologic cycle. Responsiveness to long-term trends is reflected by a negative correlation between the annual averages of GEIs and stream flow in the Madison River. This response is probably associated with long-term pressure changes in the underlying hydrothermal reservoir. We relate seasonal GEI lengthening to snowmelt recharge.