Description:
About 500 active volcanoes are known on the Earth, not counting those that lie beneath the sea. This richly illustrated USGS publication by Robert Tilling covers current monitoring techniques, some case studies, and conclusions.

Organization:
USGS Information Service

URL:
http://pubs.usgs.gov/gip/monitor/

Contact:
, Box 25286; Bldg. 810, Denver Federal Center, Denver, CO 80225; Phone: (303) 202-4700; Fax: (303) 202-4693

Cost:
None

Education Level:
General

Subject:
Volcanism

Resource Type:
Internet Site

Date Added to teachearth.com:
1/1/01