Hot Spring Monitoring at Lassen Volcanic National Park, California 1983-1985
Hot Spring Monitoring at Lassen Volcanic National Park, California 1983-1985
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1983-1985 年加利福尼亚州拉森火山国家公园的温泉监测
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
M. L. Sorey
中科院分区：
文献类型：
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作者：
M. L. Sorey
1983年至1985年期间，作为美国地质调查局水文监测计划的一部分，多次收集的数据允许对加州北方拉森火山国家公园和拉森KGRA的热液特征的自然变化进行初步估计。根据对这些溪流中氯化物通量的七次测量，拉森KGRA中沿米尔克里克和峡谷溪的高氯化物温泉沿着的总排放率平均为20.9 {+-} 1.7 L/s。测得的氯离子通量并没有出现在春季和夏季融雪期，在黄石公园和长谷火山口观察到的流量增加。相应的砷通量在米尔克里克和峡谷溪减少约2公里的距离下游的温泉约30%，最有可能是由于河床沉积物的化学吸收。在拉森火山国家公园内，硫磺厂和邦帕斯地狱的蒸汽加热热特征排水流中硫酸盐通量的测量值平均分别为7.5 {+-} 1.0和4.0 {+-} 1.5 g/s。在硫磺厂，含溶解硫化氢的蒸汽上升流的计算速率为1.8 kg/s，在Bumpass Hell为1.0 kg/s，以提供这些硫酸盐通量。
Data collected on several occasions between 1983 and 1985 as part of a hydrologic monitoring program by the U.S. Geological Survey permit preliminary estimation of the natural variability in the discharge characteristics of hydrothermal features in Lassen Volcanic National Park and the Lassen KGRA in northern California. The total rate of discharge of high-chloride hot springs along Mill Creek and Canyon Creek in the Lassen KGRA has averaged 20.9 {+-} 1.7 L/s, based on seven measurements of the flux of chloride in these streams. Measured chloride flux does not appear to increase with streamflow during the spring-summer snowmelt period, as observed at Yellowstone and Long Valley Caldera. The corresponding fluxes of arsenic in Mill Creek and Canyon Creek decrease within distances of about 2 km downstream from the hot springs by approximately 30%, most likely due to chemical absorption on streambed sediments. Within Lassen Volcanic National Park, measurements of sulfate flux in streams draining steam-heated thermal features at Sulphur Works and Bumpass Hell have averaged 7.5 {+-} 1.0 and 4.0 {+-} 1.5 g/s, respectively. Calculated rates of steam upflow containing, dissolved H{sub 2}S to supply these sulfate fluxes are 1.8 kg/s at Sulphur Works and 1.0 kg/s at Bumpass Hell.