|
| | Abstract | | To better understand the shallow underground structure of the northern coastal zone of Sagami Bay, ocean bottom gravity surveys were conducted in Novembers of 2014 and 2015. 142 measurement points were arranged offshore between Odawara and Miura, Kanagawa Pref., at an interval of 0.5 ~ 2 km. These newly measured ocean bottom gravity data were compiled with the existing onshore and offshore gravity data and a Bouguer anomaly map with an assumed density of 2.3 g/cm3 was created. In the Miura Peninsula, an ESE-WNW trending gravity high belt extends from Hayama to close to the mouth of the Sagami River by way of Enoshima Island. This suggests a western continuation of the northern Hayama Unit, one of the Cenozoic accretionary complexes and the Kinugasa Fault which was traced as the southern boundary of the gravity high belt. |
|
|
|
| |
|