울릉도 주변 무인도서의 지형․지질․경관과 활용 및 관리 방안

Abstract

The uninhabited islands located in the northeastern coast of Ulleungdo are composed of trachytes and volcaniclastics made by volcanic activities. The main geomorphological features of the islands are sea cliffs, sea caves, sea arches, tafoni, wave-cut platforms, tors and etc. The sea cliffs are quite steep, 50 ~ 90 degrees with sea arches and caves in their ground parts. Sea arches are seen in Gongam and Gwangeumdo, while in Gwaneumdo, Ddanbawi and Samseonam sea caves are dominant. Tafoni which is created by salt weathering appears in all the above uninhabited islands. Wave-cut platforms are located in Jaggeun-gongam(2) and Sobukjeo-bawi, tors are restricted to Samseonam, Ilseonam and Bukjeo-bawi, respectively. The above geomophlogical and geological features are related to the cooling of volcanic rocks, salt weathering, and wave action of the origin. In order to utilize the natural heritage of Ulleungdo, activating geotourism and edutourism is necessary. In addition, the local economy can develop by preserving the geological heritage, which can be helpful in attracting tourist, especially since Ulleingdo is certified as a international geopark. Unified management regarding education and tourism is essential for the effective preservation of islands. The uninhabited islands around Ulleungdo hold natural geomorphological and geological heritages and national starting points indicating territorial waters. Therefore, it is important to manage and develop natural heritages and the national territorial waters of the Ulleungdo.