FN Archimer Export Format
PT J
TI Future benefits of time-varying gravity missions to ocean circulation studies
BT 
AF HUGHES, Chris
   LE GRAND, Pascal
AS 1:;2:;
FF 1:;2:PDG-DOP-DCB-OPS-LPO;
C1 Proudman Oceanog Lab, Liverpool L3 5DA, Merseyside, England.
   IFREMER Brest, Phys Oceanog Lab, F-29280 Plouzane, France.
C2 PROUDMAN OCEANOG LAB, ENGLAND
   IFREMER, FRANCE
SI BREST
SE PDG-DOP-DCB-OPS-LPO
IN WOS Ifremer jusqu'en 2018
   copubli-europe
IF 0.77
TC 1
UR https://archimer.ifremer.fr/doc/2004/publication-1351.pdf
LA English
DT Article
DE ;Satellite gravity;Ocean bottom pressure;Ocean circulation changes;Abyssal
AB A summary is offered of the potential benefits of future measurements of temporal variations in gravity for the understanding of ocean dynamics. Two types of process, and corresponding amplitudes are discussed: ocean basin scale pressure changes, with a corresponding amplitude of order 1 cm of water, or 1 mm of geoid height, and changes in along-slope pressure gradient, at cross-slope length scales corresponding to topographic slopes, with a corresponding amplitude of order 1 mm of water, or a maximum of about 0.01 mm of geoid. The former is feasible with current technology and would provide unprecedented information about abyssal ocean dynamics associated with heat transport and climate. The latter would be a considerable challenge to any foreseeable technology, but would provide an exceptionally clear, quantitative window on the dynamics of abyssal ocean currents, and strong constraints on ocean models. Both options would be limited by the aliassing effect of rapid mass movements in the earth system, and it is recommended that any future mission take this error source explicitly into account at the design stage. For basin-scale oceanography this might involve a higher orbit than GRACE or GOCE, and the advantages of exact-repeat orbits and multiple missions should be considered.
PY 2004
PD APR
SO Earth, Moon, and Planets
SN 0167-9295
PU Kluwer
VL 94
IS 1-2
UT 000233240600007
BP 73
EP 81
DI 10.1007/s11038-005-0452-6
ID 1351
ER

EF