1. U.S. Department of the Interior U.S. Geological Survey The development and application history of the USGS sediment trap Jingping Xu Coastal and Marine Geology U.S. Geological Survey Menlo Park,CA 徐景平

2. Sed. traps in ocean research Honjo-type Traps · Deep, open-ocean · Biological research hahana.soest.hawaii.edu

3. Sed. traps in ocean research Honjo-type Traps · Deep, open-ocean · Biological research www.technicap.comMBARI

4. Sed. traps in ocean research Technicaps · Sediment trap · Popular in Europe www.technicap.com

5. Sed. traps in ocean research James Liu

6. USGS Sediment trap · Patented by Roger Andersen · Technology transferred to USGS in 2007 · USGS improved the intervalometer design · Worked well in high sedimentation rate environments (shelves, canyons, etc.) United States Patent 7069771

7. USGS Sediment trap

10. Sediment trap data Top 60 MAB Bottom 30 MAB

11. Sediment trap data

12. USGS Sediment trap

13. Thank You [will answer questions at the end of Marinna’s talk] 謝謝