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Record #97601:
Radar imaging of glaciovolcanic stratigraphy, Mount Wrangell caldera, Alaska: interpretation model and results / Garry K.C. Clarke, Guy Matthew Cross, Carl S. Benson.
Title: | Radar imaging of glaciovolcanic stratigraphy, Mount Wrangell caldera, Alaska: interpretation model and results / Garry K.C. Clarke, Guy Matthew Cross, Carl S. Benson. |
Author(s): | Clarke, Garry K. C. Cross, Guy Matthew. Benson, Carl S. |
Date: | 1989. |
In: | Journal of Geophysical Research. (1989.), Vol. 94(B6) (1989) |
Abstract: | Model developed that allows depth variation of temperature, heat flux, pressure, density, ice velocity, depositional age, and thermal and dielectric properties to be calculated. By using model to calculate two-way travel time and propagation losses, radar sounding traces can be transformed to give estimates of variation of power reflection coefficient as function of depth and depositional age. Prominent internal reflecting zones are located; these are attributed to buried horizons of acidic ice, possibly intermixed with volcanic ash, that were deposited during past eruptions. Depositional dates corresponding to these reflecting zones are 1728, 1770, 1853, and 1924-1950 AD. This information is used to propose volcanic history for Mount Wrangell. |
Notes: | Journal of Geophysical Research. Vol. 94(B6) :7237-7249 (1989). |
Keywords: | 551.321.61 -- Ice sounding, geophysical methods. 53.087.23 -- Remote sensing. 551.32 -- Glaciology. 551.324.05 -- Land ice, effects of exogenous phenomena. 551.324.83 -- Land ice, load. 550.93 -- Geochronology. E5 -- Glaciology: land ice. (*49) -- Alaska. (*491) -- Alaska, southcentral and southwest. |
SPRI record no.: | 97601 |
LDR 01934naa#a2200000#a#4500 001 SPRI-97601 005 20240329125017.0 007 ta 008 240329s1989####xx#ab#|##|###|0||#0|eng#d 035 ## ‡aSPRI-97601 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aClarke, Garry K. C. 245 10 ‡aRadar imaging of glaciovolcanic stratigraphy, Mount Wrangell caldera, Alaska :‡binterpretation model and results /‡cGarry K.C. Clarke, Guy Matthew Cross, Carl S. Benson. 260 ## ‡a[S.l.] :‡b[s.n.],‡c1989. 300 ## ‡ap. 7237-7249 :‡bill., diags., tables, maps. 500 ## ‡aJournal of Geophysical Research. Vol. 94(B6) :7237-7249 (1989). 520 3# ‡aModel developed that allows depth variation of temperature, heat flux, pressure, density, ice velocity, depositional age, and thermal and dielectric properties to be calculated. By using model to calculate two-way travel time and propagation losses, radar sounding traces can be transformed to give estimates of variation of power reflection coefficient as function of depth and depositional age. Prominent internal reflecting zones are located; these are attributed to buried horizons of acidic ice, possibly intermixed with volcanic ash, that were deposited during past eruptions. Depositional dates corresponding to these reflecting zones are 1728, 1770, 1853, and 1924-1950 AD. This information is used to propose volcanic history for Mount Wrangell. 650 07 ‡a551.321.61 -- Ice sounding, geophysical methods.‡2udc 650 07 ‡a53.087.23 -- Remote sensing.‡2udc 650 07 ‡a551.32 -- Glaciology.‡2udc 650 07 ‡a551.324.05 -- Land ice, effects of exogenous phenomena.‡2udc 650 07 ‡a551.324.83 -- Land ice, load.‡2udc 650 07 ‡a550.93 -- Geochronology.‡2udc 650 07 ‡aE5 -- Glaciology: land ice.‡2local 651 #7 ‡a(*49) -- Alaska.‡2udc 651 #7 ‡a(*491) -- Alaska, southcentral and southwest.‡2udc 700 1# ‡aCross, Guy Matthew. 700 1# ‡aBenson, Carl S. 773 0# ‡7nnas ‡tJournal of Geophysical Research. ‡gVol. 94(B6) (1989) ‡wSPRI-35252 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240329