منابع مشابه
in North America. Volcanic activity in central Mexico
Study of the structural changes in the Popocatepetl volcano in Mexico related to microseismicity by applying the lineament analysis to the Aster (Terra) satellite data. Abstract Mexico is one of the most volcanically active regions in North America. Volcanic activity in central Mex-ico is associated with the subduction of the Cocos and Rivera plates beneath the North American plate. Periods of ...
متن کاملDevelopment of a Prediction Scheme for Volcanic Ash Fall from Redoubt Volcano, Alaska
The purpose of this project is to develop a volcanic plume prediction model for volcanoes located in the Cook Inlet area, Alaska. Knowing where the ash plume is and predicting where it will go are important for public health and safety, as well as for flight operations and mitigating economic damage. For near-real-time plume prediction, acquisition of upper-air wind data is the essential part o...
متن کاملNumerical simulation of tsunami generation by cold volcanic mass flows at Augustine Volcano, Alaska
Many of the world’s active volcanoes are situated on or near coastlines. During eruptions, diverse geophysical mass flows, including pyroclastic flows, debris avalanches, and lahars, can deliver large volumes of unconsolidated debris to the ocean in a short period of time and thereby generate tsunamis. Deposits of both hot and cold volcanic mass flows produced by eruptions of Aleutian arc volca...
متن کاملProgress in the Infrared Remote Sensing of Volcanic Activity
Volcanic activity essentially consists of the transfer of heat from the Earth’ interior to the surface. The precise signature of this heat transfer relates directly to the processes underway at and within a particular volcano and this can be observed, at a safe distance, remotely, using infrared sensors that are present on Earth-orbiting satellites. For over 50 years, scientists have perfected ...
متن کاملA detection of Milankovitch frequencies in global volcanic activity
A rigorous detection of Milankovitch periodicities in volcanic output across the PleistoceneHolocene ice age has remained elusive. We report on a spectral analysis of a large number of well-preserved ash plume deposits recorded in marine sediments along the Pacifi c Ring of Fire. Our analysis yields a statistically signifi cant detection of a spectral peak at the obliquity period. We propose th...
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ژورنال
عنوان ژورنال: Science
سال: 1907
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.26.655.78