08-19-2007, 04:13 PM
Greg,
Below are three case within the last 100 years where something was done about the flows so we can change it if we need to.
In order to protect public and private property from being destroyed by lava flows, various plans and actual attempts have been made in the past on volcanoes to stop or divert lava flows, including Mount Etna, Sicily, Italy; Kilauea and Mauna Loa volcanoes, Hawaii, Hawaii,and Eldfell volcano, Heimaey, Vestmannaeyjar, Iceland (Bolt and others, 1977; Blong, 1984;
All three listed below were successful in slowing or diverting the lava.
Here on Hawaii,
On December 27, U.S. Army planes dropped bombs, targeting the lava channels and tubes just below the vents at 2,600 m (8,600 ft). The object was to divert the flow near its source. The results of the bombing were declared a success by Thomas A. Jaggar, Director of the Hawaiian Volcano Observatory.
Jagger wrote that "the violent release of lava, of gas and of hydrostatic pressures at the source robbed the lower flow of its substance, and of its heat." The lava stopped flowing on January 2, 1936. The efficacy of this lava bombing is disputed by some volcanologists, and lava diversion will be the subject of a future Volcano Watch.
Successful Lava Diversion, Etna 1983
Successful Lava-Cooling Operations During the 1973 Eruption of Eldfell Volcano,
Heimaey, Vestmannaeyjar, Iceland
U.S. Geological Survey Open-File Report 97-724
Below are three case within the last 100 years where something was done about the flows so we can change it if we need to.
In order to protect public and private property from being destroyed by lava flows, various plans and actual attempts have been made in the past on volcanoes to stop or divert lava flows, including Mount Etna, Sicily, Italy; Kilauea and Mauna Loa volcanoes, Hawaii, Hawaii,and Eldfell volcano, Heimaey, Vestmannaeyjar, Iceland (Bolt and others, 1977; Blong, 1984;
All three listed below were successful in slowing or diverting the lava.
Here on Hawaii,
On December 27, U.S. Army planes dropped bombs, targeting the lava channels and tubes just below the vents at 2,600 m (8,600 ft). The object was to divert the flow near its source. The results of the bombing were declared a success by Thomas A. Jaggar, Director of the Hawaiian Volcano Observatory.
Jagger wrote that "the violent release of lava, of gas and of hydrostatic pressures at the source robbed the lower flow of its substance, and of its heat." The lava stopped flowing on January 2, 1936. The efficacy of this lava bombing is disputed by some volcanologists, and lava diversion will be the subject of a future Volcano Watch.
Successful Lava Diversion, Etna 1983
Successful Lava-Cooling Operations During the 1973 Eruption of Eldfell Volcano,
Heimaey, Vestmannaeyjar, Iceland
U.S. Geological Survey Open-File Report 97-724
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