Application of the three-dimensional shallow sea and continental shelf mode for inversion of undercurrent

2006 ◽  
Vol 11 (2) ◽  
pp. 377-380
Author(s):  
Wen Biyang ◽  
Hong Chun ◽  
Wu Rui
Keyword(s):  
Continental Shelf ◽  
Three Dimensional ◽  
Shallow Sea

A stable algorithm for bed friction in three-dimensional shallow sea modal models

1992 ◽  
Vol 14 (4) ◽  
pp. 477-493 ◽  
Author(s):  
A. M. Davies ◽  
J. N. Aldridge
Keyword(s):  
Three Dimensional ◽  
Shallow Sea ◽  
Stable Algorithm ◽  
Bed Friction

Fronts and shelf-circulation models

1981 ◽  
Vol 302 (1472) ◽  
pp. 597-604 ◽  
Keyword(s):  
Numerical Model ◽  
Numerical Modelling ◽  
Continental Shelf ◽  
Satellite Imagery ◽  
Three Dimensional ◽  
Shelf Circulation ◽  
Eddy Formation ◽  
Coastal Front

Satellite imagery shows that fronts and frontal eddies are widespread on the northwest European continental shelf. The implications for the numerical modelling of transports (for example, of pollutants) are discussed. A brief review of some models of shelf circulation is given. It is argued that to include fronts in models of shelf circulation requires a better understanding of dynamics on the frontal scale. A three-dimensional numerical model of eddy formation in a coastal front is then presented that reproduces many of the observed features.

A three-dimensional theory of coastal currents and upwelling over a continental shelf

Tellus ◽  
1975 ◽  
Vol 27 (3) ◽  
pp. 249-258 ◽  
Author(s):  
R. B. Hill ◽  
J. A. Johnson
Keyword(s):  
Continental Shelf ◽  
Three Dimensional ◽  
Coastal Currents ◽  
Dimensional Theory

scholarly journals Bathymetry of Northwest Greenland Using “Ocean Melting Greenland” (OMG) High-Resolution Airborne Gravity and Other Data

2019 ◽  
Vol 11 (2) ◽  
pp. 131 ◽  
Author(s):  
Lu An ◽  
Eric Rignot ◽  
Romain Millan ◽  
Kirsty Tinto ◽  
Josh Willis
Keyword(s):  
High Resolution ◽  
Continental Shelf ◽  
Gravity Data ◽  
Three Dimensional ◽  
Ice Sheet ◽  
Greenland Ice Sheet ◽  
Three Dimensions ◽  
Airborne Gravity ◽  
Lack Of Information ◽  
Sea Bed

Marine-terminating glaciers dominate the evolution of the Greenland Ice Sheet (GrIS) and its contribution to sea-level rise. Widespread glacier acceleration has been linked to the warming of ocean waters around the periphery of Greenland but a lack of information on the bathymetry of the continental shelf and glacial fjords has limited our ability to understand how subsurface, warm, salty ocean waters of Atlantic origin (AW) reach the glaciers and melt them from below. Here, we employ high-resolution, airborne gravity data (AIRGrav) in combination with multibeam echo sounding (MBES) data, to infer the bathymetry of the coastal areas of Northwest Greenland for NASA’s Ocean Melting Greenland (OMG) mission. High-resolution, AIRGrav data acquired on a 2 km spacing, 150 m ground clearance, with 1.5 mGal crossover error, is inverted in three dimensions to map the bathymetry. To constrain the inversion away from MBES data, we compare two methods: one based on the Direct Current (DC) shift of the gravity field (absolute minus observed gravity) and another based on the density of the bedrock. We evaluate and compare the two methods in areas with complete MBES coverage. We find the lowest standard error in bed elevation (±60 m) using the DC shift method. When applied to the entire coast of Northwest Greenland, the three-dimensional inversion reveals a complex network of connected sea bed channels, not known previously, that provide natural and varied pathways for AW to reach the glaciers across the continental shelf. The study demonstrates that the gravity approach offers an efficient and practical alternative to extensive ship mapping in ice-filled waters to obtain information critical to understanding and modeling ice-ocean interaction along ice sheet margins.

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