We propose a method of using satellite images to analyze road conditions after a large-scale earthquake accompanied by
a tsunami. Remote sensing using satellite images can be used to collect information over a wide area in a short time.
Such information is particularly valuable for organizing relief efforts quickly and effectively after large-scale disasters
such as the Great East Japan Earthquake on March 11, 2011. Although a large number of studies have focused on the
extraction of damaged buildings and debris on roads, there have been few studies on the extraction of road areas flooded
by a tsunami. Also, since the Great East Japan Earthquake, there has been increased concern about tsunami damage in
addition to earthquake damage, meaning that a method of extracting both earthquake damage and tsunami damage is
required. The purpose of this study is to analyze the safety of roads around a stricken area in detail to help support relief
activities during times of disasters.
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