Observations of sea-ice conditions in the Antarctic coastal region using ship-board video cameras
| Autor: | Haruhito Shimoda, Tatsuo Endoh, Ken'ichiro Muramoto, Nobuo Ono, Takatoshi Takizawa, Shuki Ushio, Toshiyuki Kawamura, Kay I. Ohshima |
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| Jazyk: | English<br />Japanese |
| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Antarctic Record, Vol 41, Iss 1, Pp 355-365 (1997) |
| Druh dokumentu: | article |
| ISSN: | 00008982 0085-7289 2432-079X |
| DOI: | 10.15094/00008982 |
| Popis: | During the 30th, 31st, and 32nd Japanese Antarctic Research Expeditions (JARE-30,JARE-31,and JARE-32), sea-ice conditions were recorded by video camera on board the SHIRASE. Then, the sea-ice images were used to estimate compactness and thickness quantitatively. Analyzed legs are those toward Breid Bay and from Breid Bay to Syowa Station during JARE-30 and JARE-31,and those toward the Prince Olav Coast, from the Prince Olav Coast to Breid Bay, and from Breid Bay to Syowa Station during JARE-32. The results show yearly variations of ice compactness and thickness, latitudinal variations of thickness, and differences in thickness histograms between JARE-30 and JARE-32 in Lutzow-Holm Bay. Albedo values were measured simultaneously by a shortwave radiometer. These values are proportional to those of ice compactness. Finally, we examined the relationship between ice compactness and vertical gradient of air temperature above sea ice. |
| Databáze: | Directory of Open Access Journals |
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