Lava lake level as a gauge of magma reservoir pressure and eruptive hazard

Geology
By: , and 

Links

Abstract

Forecasting volcanic activity relies fundamentally on tracking magma pressure through the use of proxies, such as ground surface deformation and earthquake rates. Lava lakes at open-vent basaltic volcanoes provide a window into the uppermost magma system for gauging reservoir pressure changes more directly. At Kīlauea Volcano (Hawaiʻi, USA) the surface height of the summit lava lake in Halemaʻumaʻu Crater fluctuates with surface deformation over short (hours to days) and long (weeks to months) time scales. This correlation implies that the lake behaves as a simple piezometer of the subsurface magma reservoir. Changes in lava level and summit deformation scale with (and shortly precede) changes in eruption rate from Kīlauea's East Rift Zone, indicating that summit lava level can be used for short-term forecasting of rift zone activity and associated hazards at Kīlauea.

Study Area

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Lava lake level as a gauge of magma reservoir pressure and eruptive hazard
Series title Geology
DOI 10.1130/G36896.1
Volume 43
Issue 9
Year Published 2015
Language English
Publisher Geological Society of America
Contributing office(s) Volcano Science Center
Description 5 p.
First page 831
Last page 834
Country United States
State Hawaii
Online Only (Y/N) N
Additional Online Files (Y/N) N