Vulnerability of the East Coast of Balikpapan City in East Kalimantan (Lamaru Beach - Klandasan Beach)

Abstract

Balikpapan City located in the east coast of Kalimantan Island. The city of Balikpapan is directly adjacent to the Makassar Strait. The problem faced by Balikpapan City is the function of the land, namely the reclamation of the construction of shopping centre which results in changing the shape of the coast so that it has the potential to experience abrasion. In the city of Balikpapan for the past 6 years there has been an abrasion of 40 meters which has resulted in a decrease in Regional Original Income (PAD). Research on the vulnerability of the east coast of Balikpapan City to changes in coastline in 2005 and 2018 was focused on the calculation of social vulnerability and changes in coastline analyzed using crosstab. This study divides the area based on the shape of the beach, namely fine sand beaches, coarse sand beaches, and thick beaches. Based on the results of the analysis there are three levels of vulnerability, namely low, medium, and high. Areas with a high level of vulnerability are found in the rough sand segment. The level of vulnerability is along the fine sand beach segment and the low level of vulnerability is along the shore coast segment.