Time-variation of hydrothermal discharge at selected sites in the western United States: implications for monitoring
Ingebritsen SE, Galloway DL, Colvard EM, Sorey ML, Mariner RH. 2001. Time-variation of hydrothermal discharge at selected sites in the western United States: implications for monitoring. Journal of Volcanology and Geothermal Research. 111:1-23
This research compiled time series of hydrothermal discharge consisting of 3593 chloride- or heat-flux measurements from 24 sites in the Yellowstone region, the northern Oregon Cascades, Lassen Volcanic National Park and vicinity, and Long Valley, California. At all of these sites the hydrothermal phenomena are believed to be as yet unaffected by human activity, though much of the data collection was driven by mandates to collect environmental-baseline data in anticipation of geothermal development. The discharge time series show little sensitivity to regional tectonic events such as earthquakes or inflation/deflation cycles. Most long-term monitoring to date has focused on high-chloride springs and low-temperature fumaroles. The relative stability of these features suggests that discharge measurements done as part of volcano-monitoring programs should focus instead on high-temperature fumaroles, which may be more immediately linked to the magmatic heat source.
- Type
- Journal Article
- Authors
- Ingebritsen, S; Galloway, D; Colvard, E; Sorey, M; Mariner, R
- Units
- HIST , KLMN , LAVO , YELL
- Keywords
- ehistory, Fumaroles, Geothermal research, History, Hot Springs, hydrothermal discharge, Monitoring, Time series, Volcanology