ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., III-2, 61-68, 2016
http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/III-2/61/2016/
doi:10.5194/isprs-annals-III-2-61-2016
 
02 Jun 2016
DEVELOPMENT OF MATCHED (MIGRATORY ANALYTICAL TIME CHANGE EASY DETECTION) METHOD FOR SATELLITE-TRACKED MIGRATORY BIRDS
Tomoko Doko1,2, Wenbo Chen1,2, and Hiroyoshi Higuchi2 1Nature & Science Consulting Co., Ltd., Room 302, 3F, Chuo-dairoku-kannai Bld., 1-2-1 Furocho, Naka-ku, Yokohama 231-0032 Japan
2Keio Research Institute at SFC, Keio University, 5322 Endoh, Fujisawa 252-0082 Japan
Keywords: change point analysis, data mining, MATCHED method, migration status, migratory birds, satellite telemetry, stopovers, threshold date Abstract. Satellite tracking technology has been used to reveal the migration patterns and flyways of migratory birds. In general, bird migration can be classified according to migration status. These statuses include the wintering period, spring migration, breeding period, and autumn migration. To determine the migration status, periods of these statuses should be individually determined, but there is no objective method to define 'a threshold date' for when an individual bird changes its status. The research objective is to develop an effective and objective method to determine threshold dates of migration status based on satellite-tracked data. The developed method was named the “MATCHED (Migratory Analytical Time Change Easy Detection) method”. In order to demonstrate the method, data acquired from satellite-tracked Tundra Swans were used. MATCHED method is composed by six steps: 1) dataset preparation, 2) time frame creation, 3) automatic identification, 4) visualization of change points, 5) interpretation, and 6) manual correction. Accuracy was tested. In general, MATCHED method was proved powerful to identify the change points between migration status as well as stopovers. Nevertheless, identifying “exact” threshold dates is still challenging. Limitation and application of this method was discussed.
Conference paper (PDF, 1487 KB)


Citation: Doko, T., Chen, W., and Higuchi, H.: DEVELOPMENT OF MATCHED (MIGRATORY ANALYTICAL TIME CHANGE EASY DETECTION) METHOD FOR SATELLITE-TRACKED MIGRATORY BIRDS, ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., III-2, 61-68, doi:10.5194/isprs-annals-III-2-61-2016, 2016.

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