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Record #112040:
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MARC recordA tutorial on control methods in ice sheet modelling: application to the estimate of basal stress / Douglas R. MacAyeal.
| Title: | A tutorial on control methods in ice sheet modelling: application to the estimate of basal stress / Douglas R. MacAyeal. |
| Author(s): | MacAyeal, Douglas R. |
| Date: | 1991. |
| In: | Eos : transactions, American Geophysical Union. (1991.), Vol. 72(44, supplement) (1991) |
| Abstract: | AGU Fall Meeting Program and Abstracts, December 9-13, 1991. Control methods provide means of formulating and solving glaciological inverse problems in circumstances where the essential physical processes can be described by numerical models. To illustrate this, finite difference model of ice-stream flow is used to invert Landsat measured surface velocity for irregular spatial distribution of basal friction associated with Ice Stream E, Antarctica. Inferred distribution suggests that rigid bedrock substrata may contact base of ice stream in small areas where measured surface velocity displays strong vorticity, and where ice-stream surface appears rumpled in Landsat images. |
| Notes: | Eos : transactions, American Geophysical Union. Vol. 72(44, supplement) :170 (1991). |
| Keywords: | 551.32 -- Glaciology. 551.324 -- Land ice. 551.324.29 -- Land ice, miscellaneous forms. 551.324.54 -- Land ice, flow of particular glaciers: Ice Stream E. 519.673 -- Modelling. E5 -- Glaciology: land ice. (*7) -- Antarctic regions. (*76) -- Ross Dependency. (*767.9) -- Shirase Coast. |
| SPRI record no.: | 112040 |
LDR 01758naa#a2200000#a#4500 001 SPRI-112040 005 20230329173659.0 007 ta 008 230329s1991####xx####|##|###|0||#0|eng#d 035 ## ‡aSPRI-112040 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aMacAyeal, Douglas R. 245 12 ‡aA tutorial on control methods in ice sheet modelling :‡bapplication to the estimate of basal stress /‡cDouglas R. MacAyeal. 260 ## ‡a[S.l.] :‡b[s.n.],‡c1991. 300 ## ‡ap. 170. 500 ## ‡aEos : transactions, American Geophysical Union. Vol. 72(44, supplement) :170 (1991). 520 3# ‡aAGU Fall Meeting Program and Abstracts, December 9-13, 1991. Control methods provide means of formulating and solving glaciological inverse problems in circumstances where the essential physical processes can be described by numerical models. To illustrate this, finite difference model of ice-stream flow is used to invert Landsat measured surface velocity for irregular spatial distribution of basal friction associated with Ice Stream E, Antarctica. Inferred distribution suggests that rigid bedrock substrata may contact base of ice stream in small areas where measured surface velocity displays strong vorticity, and where ice-stream surface appears rumpled in Landsat images. 650 07 ‡a551.32 -- Glaciology.‡2udc 650 07 ‡a551.324 -- Land ice.‡2udc 650 07 ‡a551.324.29 -- Land ice, miscellaneous forms.‡2udc 650 07 ‡a551.324.54 -- Land ice, flow of particular glaciers: Ice Stream E.‡2udc 650 07 ‡a519.673 -- Modelling.‡2udc 650 07 ‡aE5 -- Glaciology: land ice.‡2local 651 #7 ‡a(*7) -- Antarctic regions.‡2udc 651 #7 ‡a(*76) -- Ross Dependency.‡2udc 651 #7 ‡a(*767.9) -- Shirase Coast.‡2udc 773 0# ‡7nnas ‡tEos : transactions, American Geophysical Union. ‡gVol. 72(44, supplement) (1991) ‡wSPRI-1028 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20230329