1. The Interplay between a Mountainous River and Nearby Submarine Canyon in Southern Taiwans Ray T. Hsu and James T. Liu Institute of Marine Geology and Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan 804-24

3. Submarine Canyons are Everywhere on This Planet!

4. Submarine Canyons Around Taiwan

5. Kaoping Submarine Canyon Taiwan Study Area

7. The Annual Mean Runoff of The Kaoping River 78%

8. Field Survey

9. Trap Array and Tripod Tripod

10. Result

11. Observations on The Tripod

12. Suspended Sediments Captured in Traps and SSC Measured from LISST-100)

13. Observation on RCM

14. Temperature (Tripod and Trap Array)

15. Discussion Coastal impact by kai-tek typhoon. Coastal impact by kai-tek typhoon The sand fraction in the suspended sediment concentration (SSC) in the canyon came from the shelf floor above and has the highest correlation with the river sediment discharge. The sand fraction in the suspended sediment concentration (SSC) in the canyon came from the shelf floor above and has the highest correlation with the river sediment discharge. Clay composes the largest fraction of SSC in the canyon. Clay composes the largest fraction of SSC in the canyon

16. Coastal Impact by Kai-tek Typhoon SSC and Wave Field at Kaoping River Mouth

17. Sand in The Submarine Canyon Sand Fall in San Lucas Submarine Canyon

18. Grain Size Composition of Captured Sediments

19. Conclusion (1) High mountainous rivers located in the tropical and subtropical regions of the world whose runoff and sediment content (sediment load) display: Distinct dry and flood seasons in their annual hydrological cycle The range of magnitude can span several orders of magnitude the extreme values in the runoff and sediment content are controlled by episodic events that mostly occur in the summer (flood season)

20. Conclusion (2) The largest fraction in SSC in Kaoping Submarine Canyon (KPCY) is from clay to very fine grains. The role of the KPCY is an important conduit for sediments from the river to the ocean, especially in episodic events, such as typhoons