Gravity mapping in the southern Weddell Sea region, Antarctica (Scale 1:2 000 000) ...
New maps of free-air and the Bouguer gravity anomalies on the Weddell Sea sector (70-81° S, 6-75° W) of Antarctica are presented. These maps are based on the first computer compilation of available gravity data collected by ''Sevmorgeologia'' in 1976-89 in the southern Weddell Se...
| Main Authors: | , , , |
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| Format: | Dataset |
| Language: | English |
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PANGAEA
2000
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.596360 https://doi.pangaea.de/10.1594/PANGAEA.596360 |
| Summary: | New maps of free-air and the Bouguer gravity anomalies on the Weddell Sea sector (70-81° S, 6-75° W) of Antarctica are presented. These maps are based on the first computer compilation of available gravity data collected by ''Sevmorgeologia'' in 1976-89 in the southern Weddell Sea and adjacent coasts of western Dronning Maud Land (WDML) and Coats Land. The accomplished gravity studies comprise airborne observations with a line spacing of about 20 km and conventional measurements at over-the-ice points, which were spaced at 10-30 km and supplemented by seismic soundings. Hence, anomalies on the maps represent mainly large-scale and deep crustal features.The dominant feature in free-air gravity map is a large dipolar gravity anomaly stretching along the continental margin. Following the major grain of seabed morphology this shelf-edge/slope anomaly (SESA) is clearly divided into three segments characterized by diverse anomaly amplitudes, wavelengths and trends. They are associated with continental margins of ... : Supplement to: Aleshkova, Nadezhda D; Golynsky, Alexander V; Kurinin, Rem G; Mandrikov, V S (2000): Gravity mapping in the southern Weddell Sea region. (Explanatory note for free-air and Bounger anomalie maps). Polarforschung, 67(3), 163-177 ... |
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