Lava Flow Hazard Zones

The Island of Hawaiʻi was mapped into 9 Zones meant to portray the future long-term hazard due to lava flow activityUSGS.

Lava Flow Hazard Zones are areas designated by the United States Geological Survey for the Island of Hawaiʻi in the United States. First prepared in 1974 by Donal Mullineaux and Donald Peterson of the USGS and revised in 1992,[1] the maps outline the qualitative hazard posed by lava flows based on the past history of lava flow activity on each of the 5 volcanoes that form the Island of Hawaiʻi. Zone 1 represents the areas that are most hazardous and Zone 9 the least hazardous.[2]

USGS Lava Hazard Zone definitions

The lava flow hazard zones are based on location of eruptive vents, past lava coverage, and topography.[3]

The USGS Hawaiian Volcano Observatory maintains an FAQ intended to answer many of the questions that arise from the map and its various uses.[4]

References

  1. Thomas L. Wright, Jon Y.F. Chun, Jean Exposo, Christina Heliker, Jon Hodge, John P. Lockwood, and Susan M. Vogt (1992), Map showing lava-flow hazard zones, Island of Hawaii:U.S. Geological Survey Miscellaneous Field Studies Map MF-2193, scale 1:250,000, retrieved 31 May 2014
  2. "Island of Hawai`i Lava-flow Hazard Zones". Hawaii Volcano Observatory. United States Geological Survey. Retrieved 31 May 2014.
  3. "Hazard Zones for Lava Flows on the Island of Hawai`i". Hawaiian Volcano Observatory. United States Geological Survey. Retrieved 31 May 2014.
  4. "Lava-Flow Hazard Zones Island of Hawai'i Frequently Asked Questions". Hawaiian Volcano Observatory. United States Geological Survey. Retrieved 31 May 2014.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.