홍수 추적에 대한 GOCI의 활용

Abstract

In the September 2016, piles of empty cans and destructed debris were found on the beaches of east coast of the Republic of Korea. Many articles reported that they might have come from the Tumen River Flood in the DPRK induced by the Typhoon Lionrock in late August that year. Actually the authority reported that the big flood swept buildings, farmlands and so on carrying them to the sea. Their debris might have been moved toward the South by the winds and coastal currents.This study tried to manifest the applicability of GOCI data to identify the patches of the floating debris and to trace their movement on the surface of the sea down to the coast of the Republic of Korea. The study tried to confirm the results of the numerical ocean model, the Hybrid Coordinate Ocean Model, using also the Landsat-8’s near-infrared (NIR) data.The results of the study confirmed that the source of the ocean debris was really the Tumen River Flood in the DPRK and that it takes about 20 days for the debris to reach to the 38th north parallel, which verify moreover the results of the numerical model. It is believed that the GOCI’s Total Suspended Sediment Algorithm would be very useful for identifying and tracing patches of floating matters on the sea surface. The results of the study manifest indeed that GOCI data is quite useful for tracing the flood induced debris’ movements on the surface of the sea.n Lionrock in late August that year. Actually the authority reported that the big flood swept buildings, farmlands and so on carrying them to the sea. Their debris might have been moved toward the South by the winds and coastal currents.This study tried to manifest the applicability of GOCI data to identify the patches of the floating debris and to trace their movement on the surface of the sea down to the coast of the Republic of Korea. The study tried to confirm the results of the numerical ocean model, the Hybrid Coordinate Ocean Model, using also the Landsat-8’s near-infrared (NIR) data.The results of the study confirmed that the source of the ocean debris was really the Tumen River Flood in the DPRK and that it takes about 20 days for the debris to reach to the 38th north parallel, which verify moreover the results of the numerical model. It is believed that the GOCI’s Total Suspended Sediment Algorithm would be very useful for identifying and tracing patches of floating matters on the sea surface. The results of the study manifest indeed that GOCI data is quite useful for tracing the flood induced debris’ movements on the surface of the sea.