Gravity anomalies over inactive fracture zones in the central North Atlantic
The basement topography and the free-air gravity along two profiles in the central North Atlantic between 16 degree and 25 degree N, crossing a number of fracture zones, were divided in three wavelength intervals. Two-dimensional modelling shows that the short wavelength (> 50 km) gravity is well...
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| Veröffentlicht in: | Marine geophysical researches 1984-01, Vol.6 (4), p.383-394 |
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| container_title | Marine geophysical researches |
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| creator | MULDER, T. F. A COLLETTE, B. J |
| description | The basement topography and the free-air gravity along two profiles in the central North Atlantic between 16 degree and 25 degree N, crossing a number of fracture zones, were divided in three wavelength intervals. Two-dimensional modelling shows that the short wavelength (> 50 km) gravity is well explained by uncompensated topography (mainly spreading topography). For the long wavelengths (>200 km) there is no correlation of topography and gravity. Residual anomalies comprise the Ridge effect as well as regional anomalies related to depth anomalies. The 50 to 200 km band-pass filtered topography and gravity contain relevant information on fracture zones. Models require a base of the crust that parallels the topography rather than a form of regional compensation. |
| doi_str_mv | 10.1007/BF00286251 |
| format | Article |
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| ispartof | Marine geophysical researches, 1984-01, Vol.6 (4), p.383-394 |
| issn | 0025-3235 1573-0581 |
| language | eng |
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| subjects | Earth sciences Earth, ocean, space Exact sciences and technology Marine Marine geology |
| title | Gravity anomalies over inactive fracture zones in the central North Atlantic |
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