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Record #118749:
Stress perturbations from compressional flow: the propagation of calculation errors from the surface to the bed of a glacier / David B. Bahr, W. Tad Pfeffer, Mark F. Meier.
Title: | Stress perturbations from compressional flow: the propagation of calculation errors from the surface to the bed of a glacier / David B. Bahr, W. Tad Pfeffer, Mark F. Meier. |
Author(s): | Bahr, David B. Pfeffer, W. Tad. Meier, Mark F. |
Date: | 1992. |
In: | Eos : transactions, American Geophysical Union. (1992.), Vol. 73(43, fall meeting supplement) (1992) |
Abstract: | Abstract only. By considering small perturbations from simple compressional and extensional flow, influence of surface velocity measurement errors on stresses calculated at depth in glacier is analytically determined using power series solutions to nonlinear ill-posed boundary value problem. With decreasing spatial wavelengths, power series solutions to stresses show increasing reliance on higher order spatial derivatives of surface velocity data. This is fundamental source of instability in ill-posed boundary value problem. |
Notes: | Eos : transactions, American Geophysical Union. Vol. 73(43, fall meeting supplement) :159 (1992). |
Keywords: | 551.32 -- Glaciology. 551.324 -- Land ice. 551.324.22 -- Glaciers. 551.324.51 -- Land ice, theory of flow. 519.673 -- Modelling. E5 -- Glaciology: land ice. |
SPRI record no.: | 118749 |
LDR 01559naa#a2200000#a#4500 001 SPRI-118749 005 20240329143048.0 007 ta 008 240329s1992####xx####|##|###|0||#0|eng#d 035 ## ‡aSPRI-118749 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aBahr, David B. 245 10 ‡aStress perturbations from compressional flow :‡bthe propagation of calculation errors from the surface to the bed of a glacier /‡cDavid B. Bahr, W. Tad Pfeffer, Mark F. Meier. 260 ## ‡a[S.l.] :‡b[s.n.],‡c1992. 300 ## ‡ap. 159. 500 ## ‡aEos : transactions, American Geophysical Union. Vol. 73(43, fall meeting supplement) :159 (1992). 520 3# ‡aAbstract only. By considering small perturbations from simple compressional and extensional flow, influence of surface velocity measurement errors on stresses calculated at depth in glacier is analytically determined using power series solutions to nonlinear ill-posed boundary value problem. With decreasing spatial wavelengths, power series solutions to stresses show increasing reliance on higher order spatial derivatives of surface velocity data. This is fundamental source of instability in ill-posed boundary value problem. 650 07 ‡a551.32 -- Glaciology.‡2udc 650 07 ‡a551.324 -- Land ice.‡2udc 650 07 ‡a551.324.22 -- Glaciers.‡2udc 650 07 ‡a551.324.51 -- Land ice, theory of flow.‡2udc 650 07 ‡a519.673 -- Modelling.‡2udc 650 07 ‡aE5 -- Glaciology: land ice.‡2local 700 1# ‡aPfeffer, W. Tad. 700 1# ‡aMeier, Mark F. 773 0# ‡7nnas ‡tEos : transactions, American Geophysical Union. ‡gVol. 73(43, fall meeting supplement) (1992) ‡wSPRI-1028 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240329