학술논문
Signatures of underwater bottom topography in the Straits of Malacca in images from the SPOT satellites
Document Type
Conference
Author
Source
IGARSS 2000. IEEE 2000 International Geoscience and Remote Sensing Symposium. Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment. Proceedings (Cat. No.00CH37120) Geoscience and remote sensing Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International. 6:2684-2686 vol.6 2000
Subject
Language
Abstract
On visible/near-infrared images of the Straits of Malacca, taken by the SPOT satellites, signatures of the underwater bottom topography can be seen. These signatures consist of bright lines and patches which occur roughly at the location of underwater ridges (water depth less than 20 m). The authors show that the signatures are caused by a surface phenomenon: namely, the modulation of the strong tidal current in the Straits of Malacca by the bottom topography in turn modulates the sea surface roughness. This affects the Sun glitter radiance of the sea surface and thus can become visible in the image, provided the imaging geometry is suitable. This is substantiated by simulation calculations. This study shows that qualitative information about the position of shoals can be derived from SPOT images.