Thermal surveillance of active volcanoes using the LANDSAT-1 data collection system. Part III. Heat discharge from Mount St. Helens, Washington. Final report, 1972--1975
The author has identified the following significant results. Two thermal anomalies, A at 2740 m altitude on the north slope, and B between 2650 and 2750 m altitude on the southwest slope at the contact of the dacite summit dome of Mount St. Helens, Washington, were confirmed by aerial infrared scanner surveys between 1971 and 1973. LANDSAT 1 data collection platform 6166, emplaced at site B anomaly, transmitted 482 sets of temperature values in 1973 and 1974, suitable for estimating the differential radiant emission as 84 W/sq m, approximately equivalent to the Fourier conductive flux of 89 W/sq m in the upper 15 cm below the surface. The differential geothermal flux, including heat loss via evaporation and convection, was estimated at 376 W/sq m. Total energy yield of Mount St. Helens probably ranges between 0.1 and 0.4 x 10 to the 6th power W.
- Research Organization:
- Geological Survey, Denver, CO (USA)
- OSTI ID:
- 6492580
- Report Number(s):
- E-78-10122
- Country of Publication:
- United States
- Language:
- English
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