Penelitian ini bertujuan untuk menentukan tingkat kerentanandan pola sebaran banjir dengan menggunakan analisis Sistem Informasi Geografis(SIG). Penentuan tingkat kerentanandan pola sebaran banjir di dasarkan atas tingkat curah hujanyang sangat tinggi kurang, yakni lebih dari 2.838 mm per tahun sehingga dapat berpotensi terjadinya banjir. Penelitian ini dilakukan di Daerah Aliran Sungai (DAS) Mede, Kabupaten Halmahera Utara. Untuk mengukur tingkat kerentanan banjir dan pola sebaran banjir digunakan metode Aritmatika dengan penentuan nilai interval. Hasil analisis menunjukkan daerah yang kurang rentan seluas 318,92 ha yang terletak di bagian hulu dan hilir DAS dengan persentase 5,74%. Bagian hulu dan sekitarnya merupakan bagian yang memiliki kelas rentan dengan luas yaitu 3226,10 ha dengan persentase 57,79%. Sedangkan yang tergolong sangat rawan adalah bagian hilir dengan luas wilayah 2037,06 ha 36,49%. Dari hasilyang di peroleh untuk mengendalikan kejadian banjir, harus adanya penataan pola penggunaan lahan di sekitar DAS Mede.Kata Kunci: Limbah Domestik , Kualitas Air, Pencemaran Air, Baku Mutu
Coastal abrasion in Kofiau District, Raja Ampat Regency has an impact on physical damage to the coastal landscape and the impact on the social environment, namely the interaction of the physical-social environment and the changes in social life that accompany it. The purpose of this study was to determine the impact of coastal abrasion and its effect on the social environment of the community in Kofiau District, Raja Ampat Regency. The research method used is qualitative. There were six sources of information consisting of village heads, community, religious leaders, education leaders, youth, and the community establishing coastal abrasion. Data collection techniques used are observation, interviews, and documentation. The analysis technique is carried out by data reduction, data presentation, and concluding each research data. The results showed: 1) there was damage to the landscape as part of the physical condition of the abrasion beach, namely the erosion of land along the coast, people losing their homes and homestays, damaged village connecting roads, and the destruction of wave barriers. 2) some people lost their jobs in the tourism sector as a result of the destruction of homestays and cafes as a means of supporting tourism activities. 3) some people want to use relocation to a safer place, but choose to survive because life has merged with coastal life. 4) efforts to reduce the impact of abrasion are the construction of embankments, maintenance of coral reefs, and planting of mangrove trees.
The main problem of the research is that the learning process of socioeconomic geography has not optimized contextual learning. The research aims to improve the quality of the learning process and student learning outcomes in learning socio-economic geography in students of the Geography study program Faculty of Social Sciences Manado State University. The research method used in this study is descriptive, which is developmental. The sample determination technique in this study is a purposive sampling technique, a sample of 20 students of the geography study program who contracted the location analysis course. The analysis used is descriptive. The calculation results showed that contextual learning in socio-economic geography learning was influential in developing learning participants' learning ability because all students participating in the learning program obtained a learning outcome score of ≥70, categorized as a Successful category. Thus, contextual learning effectively improves student learning outcomes in learning socio-economic geography.
The main problem of research in the learning process of location analysis due to the instructor has not applied discovery learning methods. This Research aimed to improve the quality of the learning process and to improve learning outcomes in socio-economic geography courses in Universitas Negeri Manado, Geography education study program students. The research method is descriptive, by nature developmental. Research conducted on a geography education study program that taken a location analysis course with a total of 25 students as purposive sampling. The results showed discovery learning methods are very effective to improve learning outcomes in the Location Analysis course of geography education study program at the Faculty of Social Science of Universitas Negeri Manado (UNIMA). The results show throughout students participating in the learningprogram obtaining ≥ 70 declared as passing grade score.
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