4th International Submarine Canyon Symposium (INCISE2018)

5-7 November 2018, Shenzhen, CHINA

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This is the detail of Comparison between the morphology of the axial channels of Kaoping and Monterey Submarine Canyons

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Author
Eve Lundsten
Co-Author(s)
Anderson, K., Paull, C.K., Caress, D.W., Thomas, H., Gwiazda, R., Liu, C.S., Chen, T.T.
Abstarct Title
Comparison between the morphology of the axial channels of Kaoping and Monterey Submarine Canyons
Abstarct Body
High-resolution multibeam bathymetric surveys of the floor and lowermost flanks of Kaoping Canyon (SW of Taiwan) and Monterey Canyon (off Central California) were collected with the Monterey Bay Aquarium Research Institute’s mapping AUV (autonomous underwater vehicle). The resulting bathymetry (1 m horizontal resolution and 0.1 m vertical resolution) reveals the fine-scale morphology of both canyons at unprecedented levels of detail. Kaoping Canyon was surveyed in two depth ranges in May 2017, from 500 to 820 and 1310 to 1500 m depth along the axial channel. The axial channel of Monterey Canyon has been systematically mapped with the same AUV down to 2300 m and selected sections have been repeatedly surveyed between 2008 and 2016. In Monterey Canyon concave-up, crescent shaped bedforms (CSB) are the dominant seafloor morphology in the axial channel. The CSB are well defined, usually extend all the way across the channel and occur in a nearly continuous train along the canyon floor. In contrast, in Kaoping Canyon’s axial channel there are some poorly defined CSB as well as other morphologies including pockmarks and large scale, complex, concave-down waveforms. We will show 1m resolution bathymetry that contrasts the differing morphologies in the axial channels of Kaoping and Monterey Canyons.
INCISE Theme
Special Session: Canyons and trenches in the South China Sea and West Pacific
Presentation Type
Poster Presentation
Keywords
Kaoping Canyon, multibeam bathymetry, Monterey Canyon, submarine canyon morphology

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