NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 35 of 421
Formation of perched lava ponds on basaltic volcanoes: Interaction between cooling rate and flow geometry allows estimation of lava effusion rates
Author and Affiliation:
Wilson, L.(Brown Univ., Providence, RI, United States)
Parfitt, E. A.(Brown Univ., Providence, RI, United States)
Abstract: Perched lava ponds are infrequent but distinctive topographic features formed during some basaltic eruptions. Two such ponds, each approximately 150 m in diameter, formed during the 1968 eruption at Napau Crater and the 1974 eruption of Mauna Ulu, both on Kilauea Volcano, Hawaii. Each one formed where a channelized, high volume flux lava flow encountered a sharp reduction of slope: the flow spread out radially and stalled, forming a well-defined terminal levee enclosing a nearly circular lava pond. We describe a model of how cooling limits the motion of lava spreading radially into a pond and compare this with the case of a channelized flow. The difference in geometry has a major effect, such that the size of a pond is a good indicator of the volume flux of the lava forming it. Lateral spreading on distal shallow slopes is a major factor limiting the lengths of lava flows.
Publication Date: Jan 01, 1993
Document ID:
19940016405
(Acquired Dec 28, 1995)
Accession Number: 94N20878
Subject Category: GEOPHYSICS
Coverage: Abstract Only
Document Type: Conference Paper
Publication Information: Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 3: N-Z; p 1525-1526
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Brown Univ.; Dept. of Geological Sciences.; Providence, RI, United States
Description: 2p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: BASALT; FLOW EQUATIONS; FLOW GEOMETRY; FLOW VELOCITY; FLUID FLOW; LAVA; VOLCANOES; CHANNEL FLOW; COOLING; PONDS; TOPOGRAPHY; VOLCANOLOGY; VOLUME
Imprint And Other Notes: In Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 3: N-Z p 1525-1526 (SEE N94-20636 05-91)
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 27, 2013
Contact Us