|
Hokkaido University Collection of Scholarly and Academic Papers >
Institute of Low Temperature Science >
Peer-reviewed Journal Articles, etc >
Sea-ice drift characteristics revealed by measurement of acoustic Doppler current profiler and ice-profiling sonar off Hokkaido in the Sea of Okhotsk
| Title: | Sea-ice drift characteristics revealed by measurement of acoustic Doppler current profiler and ice-profiling sonar off Hokkaido in the Sea of Okhotsk |
| Authors: | Fukamachi, Yasushi Browse this author →KAKEN DB | | Ohshima, Kay I. Browse this author | | Mukai, Yuji Browse this author | | Mizuta, Genta Browse this author | | Wakatsuchi, Masaaki Browse this author |
| Issue Date: | May-2011 |
| Publisher: | International Glaciological Society |
| Journal Title: | Annals of Glaciology |
| Volume: | 52 |
| Issue: | 57 |
| Start Page: | 1 |
| End Page: | 8 |
| Publisher DOI: | 10.3189/172756411795931507 |
| Abstract: | In the southwestern part of the Sea of Okhotsk off Hokkaido, sea-ice drift characteristics are investigated using the ice and water velocities obtained from a moored upward-looking acoustic Doppler current profiler (ADCP) during the winters of 1999-2001. Using hourly-mean values of these data along with the wind data measured at a nearby coastal station, the wind factor and turning angle of the relative velocity between the ice and water velocities with respect to the wind are calculated assuming free drift under various conditions. Since the simultaneous sea-ice draft data are also available from a moored ice-profiling sonar (IPS), we examine the dependence of drift characteristics on ice thickness for the first time. As ice thickness increases and wind decreases, the wind factor decreases and the turning angle increases, as predicted by the theory of free drift. This study clearly shows the utility of the moored ADCP measurement for studying sea-ice drift, especially with the simultaneous IPS measurement for ice thickness, which cannot be obtained by other methods. |
| Rights: | © 2011 International Glaciological Society |
| Relation: | http://www.igsoc.org/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/47350 |
| Appears in Collections: | 低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 深町 康
|
