HR: 14:15h
AN: G43C-03 INVITED     [Abstracts]
TI: CALIPSO Borehole Monitoring Project at Soufriere Hills Volcano, Montserrat, BWI: Overview, and Response of Magma Reservoir to Prodigious Dome Collapse
AU: * Voight, B
EM: voight@ems.psu.edu
AF: Penn State University, 334 Deike Bldg, University Park, PA 16802 United States
AU: Mattioli, G S
AF: University of Arkansas, 113 Ozark Hall, Fayetteville, AR 72701 United States
AU: Linde, A T
AF: Carnegie Institution of Washington, 5241 Broad Branch Rd., Washington, DC 20015 United States
AU: Sacks, I S
AF: Carnegie Institution of Washington, 5241 Broad Branch Rd., Washington, DC 20015 United States
AU: Young, S R
AF: Penn State University, 334 Deike Bldg, University Park, PA 16802 United States
AU: Malin, P E
AF: Duke University, Box 90235, Durham, NC 27708 United States
AU: Shalev, E
AF: Duke University, Box 90235, Durham, NC 27708 United States
AU: Hidayat, D
AF: Penn State University, 334 Deike Bldg, University Park, PA 16802 United States
AU: Elsworth, D
AF: Penn State University, 334 Deike Bldg, University Park, PA 16802 United States
AU: Widiwijayanti, C
AF: Penn State University, 334 Deike Bldg, University Park, PA 16802 United States
AU: Miller, V
AF: Penn State University, 334 Deike Bldg, University Park, PA 16802 United States
AU: McWhorter, N
AF: Carnegie Institution of Washington, 5241 Broad Branch Rd., Washington, DC 20015 United States
AU: Schleigh, B
AF: Carnegie Institution of Washington, 5241 Broad Branch Rd., Washington, DC 20015 United States
AU: Johnston, W
AF: University of Arkansas, 113 Ozark Hall, Fayetteville, AR 72701 United States
AU: Sparks, R
AF: Bristol University, Queens Rd, Bristol, BS8 1RJ United Kingdom
AU: Neuberg, J
AF: Leeds University, School of Earth Sciences, Leeds, LS2 9JT United Kingdom
AU: Bass, V
AF: Montserrat Volcano Observatory, Fleming, Salem, 664 Montserrat
AU: Dunkley, P
AF: Montserrat Volcano Observatory, Fleming, Salem, 664 Montserrat
AU: Herd, R
AF: Montserrat Volcano Observatory, Fleming, Salem, 664 Montserrat
AU: Jolly, A
AF: Montserrat Volcano Observatory, Fleming, Salem, 664 Montserrat
AU: Norton, G
AF: Montserrat Volcano Observatory, Fleming, Salem, 664 Montserrat
AU: Syers, T
AF: Montserrat Volcano Observatory, Fleming, Salem, 664 Montserrat
AU: Thompson, G
AF: Montserrat Volcano Observatory, Fleming, Salem, 664 Montserrat
AU: Williams, C
AF: Montserrat Volcano Observatory, Fleming, Salem, 664 Montserrat
AU: Williams, D
AF: Montserrat Volcano Observatory, Fleming, Salem, 664 Montserrat
AU: Clarke, A B
AF: Arizona State University, Box 871404, Tempe, AZ 85827 United States
AB: Project {\bf CALIPSO} ({\bf C}aribbean {\bf A}ndesite {\bf L}ava {\bf I}sland {\bf P}recision {\bf S}eismo-geodetic {\bf O}bservatory) aims to investigate the magmatic system at the active Soufriere Hills Volcano (SHV), Montserrat. The collaborative project involves several institutions acting in partnership with the Montserrat Volcano Observatory (MVO), and is funded by NSF with assistance by NERC. SHV remains active after 9 years, displaying cyclic activity on several scales. Many aspects of andesite system dynamics remain poorly understood, and CALIPSO is expected to improve our understanding of SHV and andesite systems generally. Drilling was carried out Nov 02 to Mar 03. {\bf CALIPSO} comprises an integrated array of four strategically located 200-m boreholes, plus several shallower holes and surface installations. The borehole instruments are designed to have long life (decades). Each site includes a very broad-band Sacks-Evertson strainmeter, three-component seismometer, tiltmeter, and surface cGPS station. At one site a hot-hole strainmeter design, involving hydraulic sensors and no downhole electronics, has been used for the first time anywhere. FreeWave telemetry is coupled with Quanterra A/D converters. These instruments are intended to probe changes in the andesitic volcanic system and underlying mafic sources with unprecedented sensitivity. Early data from the July 2003 dome collapse suggest remarkable insights about the depth, shape and nature of the volatile-saturated magmatic reservoir, gleaned from the magnitude of dilatation pulses accompanying the collapse, and their change in sign of with radial distance.
DE: 8400 VOLCANOLOGY
DE: 8414 Eruption mechanisms
DE: 8419 Eruption monitoring (7280)
DE: 8494 Instruments and techniques
SC: Geodesy [G]
MN: 2004 AGU Fall Meeting