Geotourism Potential Of Phu Quy Island, Binh Thuan Province

Phu Quy island – Binh Thuan province, is 120 km southeast of Phan Thiet city, where the long – lasting destruction of waves, wind, and rain into oceanic volcanic materials formed four significant geomorphological heritages. These geomorphosites have scientific and additional values (cultural, aesthetic, and ecological values), of which mountain Cao Cat cinder cones deserves to be a South Central Coast geomorphosite; while mountain Cam volcano, Hang Cliff – Nho beach erosion coast and Tranh volcanic islet are proposed at a local level. The impressive cliffs exposed layers of coarse and steeply sloping sediments caused by blasting; erosion coastal terrain such as cliffs, rocky headlands, stacks, arch, islets, etc. all shapes and colors associated with landmarks such as Mong Tay tack, Gam inlet, Ban inlet, Xuong Ca headland, Phat inlet, Dried Squid pond, Den islet, Giua islet, Do islet... are outstanding scientific values. Furthermore, Sa Huynh cultural relics (2,500 – 3,000 years ago) discovered in mountain Cao Cat; Linh Son, and Linh Buu ancient pagodas; Phu Quy landscape viewpoints from mountain Cam Lighthouse or colorful coral reefs on Tranh islet... are additional values that increase the worth of Phu Quy island's geomorphosites. Interpreting the scientific and additional values of these geomorphosite with images, books, geometrically similar models, etc. would promote the geotourism – a niche of the sustainable tourism market that is developed along with Global Geoparks recognized by UNESCO.

TIPOLOGI, DINAMIKA, DAN POTENSI BENCANA ALAM DI KAWASAN PESISIR KABUPATEN TULUNGAGUNG

This study aims to determine the typology, dynamics and potential of natural disasters in the coastal area of Tulungagung Regency, East Java Province. The results of this study indicate that the typology in the coastal area of Tuluagung Regency consists of structurally shaped coast, wave erosion coast, marine deposition coast, land erosion coast, sub aerial deposition coast and several forms of typology impact from human activities utilizing coastal resources. The form of dynamics that develop in the coastal area of Tulungagung Regency is generally influenced by environmental conditions, factors of sea water waves and human activities in meeting the needs of life as well as for meeting the means of tourism development. While the potential for disasters in the coastal areas of Tulungagung Regency such as tsunami, abrasion, and sea water intrusion.

ANÁLISE MULTITEMPORAL DA VARIABILIDADE DA LINHA DE COSTA DO LITORAL DO MUNICÍPIO DE CAUCAIA, CEARÁ, BRASIL

A erosão costeira, que pode ser de decorrência natural ou por consequência de ações humanas, vem deixando suas marcas no litoral de Caucaia, destruindo residências, barracas de praia e outras estruturas urbanas. O objetivo deste estudo é avaliar a variação da linha de costa do município de Caucaia – CE, em um período de 10 anos, e categorizá-la a partir de classificação pré-definida a partir de estudos anteriores. A delimitação da linha de costa foi realizada a partir de imagens RapidEye e QuickBird tendo como base a linha de preamar média (LPM), esta determinação serviu para calcular suas taxas de variação a partir do parâmetro Linear Regression Rate (LRR). Os resultados levantados permitiram fazer análises particularizadas por praias. Desta forma verificou-se que as tendências erosivas se apresentam em 38% da costa, concentrando-se, no extremo leste do litoral e na sua região central. Já o trecho costeiro oeste apresentou taxas que indicam estabilidade e acreção.Palavras-chave: Linhas de costa; erosão costeira; Litoral de Caucaia. ABSTRACTThe Coastal erosion that may be due to natural causes or human actions has left its mark on the coast of Caucaia, destroying residences, beach tents and urban infrastructures (e.g.avenues). The objective of this study is to evaluate the shoreline variation of the municipality of Caucaia - CE over a period of 10 years and to categorize it from the classification applied by Esteves and Finkl (1998) and Luijendijk et al. (2018).The delimitation of the shoreline was made using a RapidEye and QuickBird images based on the average hightide line (LPM), this determination was used to calculate their rates of variation from the parameter Linear Regression Rate (LRR). In this way, it was verified that the erosive tendencies present in 38% of the coast, concentrating, mainly, between the central region and the more east end, in counterpoint, starting from the central area to the west are rates that indicate stability and accretion.Keywords: shoreline, coastal erosion, coast of Caucaia. RESUMENLa erosión costera que puede ser de naturaleza natural o como resultado de acciones humanas ha dejado su huella en la costa de Caucaia, destruyendo casas, cabañas de playa y otras estructuras urbanas. El objetivo de este estudio es evaluar la variación de la costa del municipio de Caucaia - CE, durante un período de 10 años, y clasificarla a partir de una clasificación predefinida de estudios anteriores. La delimitación de la costa se realizó a partir de imágenes RapidEye y QuickBird basadas en la línea media previa al casco (LPM), esta determinación se utilizó para calcular sus tasas de cambio a partir del parámetro Tasa de regresión lineal (LRR). Los resultados obtenidos permitieron realizar análisis individualizados por playas. Por lo tanto, se encontró que las tendencias de erosión están presentes en el 38% de la costa, concentrándose en el extremo este de la costa y en su región central. El tramo costero occidental mostró tasas que indican estabilidad y acreción.Palabras clave: costas; erosión costera; Costa del Caucaia.

TIPOLOGI PESISIR KAWASAN KARST KABUPATEN WONOGIRI

Penelitian ini bertujuan untuk (1) menganalisis tipologi pesisir di Kawasan Karst Kabupaten Wonogiri, Provinsi Jawa Tengah, (2) Menganalisis potensi yang terdapat di lokasi kajian, dan (3) menganalisis permasalahan yang ada di lokasi kajian. Penentuan tipologi pesisir didasarkan pada klasifikasi Shepard (1972) yang termuat dalam pedoman survei cepat terintegrasi yang disusun oleh Fakultas Geografi UGM dan BAKOSURTANAL (sekarang BIG). Analisis potensi dan permasalahan dilakukan dengan melakukan survei lapangan, wawancara, dan kajian pustaka. Hasil kajian menunjukkan bahwa tipologi pesisir di Kabupaten Wonogiri terdiri dari tiga jenis tipologi pesisir, yaitu; wave erosion coast, marine deposition coast dan structurally shaped coast; potensi pesisir Kabupaten Wonogiri terdiri dari potensi pariwisata, pertanian, peternakan dan perikanan; dan permasalahan yang ada di pesisir Kabupaten Wonogiri terdiri dari sarana dan prasarana yang terbatas, aksesibilitas yang kurang baik, bencana tsunami, rip current dan keterbatasan sumberdaya air.

KAJIAN GENESIS DAN DINAMIKA WILAYAH PESISIR KAWASAN KARST PULAU SEMPU KABUPATEN MALANG PROVINSI JAWA TIMUR

Penelitian ini bertujuan untuk (1) mengidentifikasi tipologi pesisir Pulau Sempu; (2) menjelaskan genesis pesisir Pulau Sempu; dan (3) menjelaskan berbagai macam dinamika pesisir Pulau Sempu. Metode penelitian dilakukan dengan membuat peta tentative tipologi pesisir Pulau Sempu berdasarkan pada peta RBI skala 1: 25.000 yang kemudian dilanjutkan dengan melakukan survey lapangan dengan purposive sampling dan mengelilingi Pulau Sempu dengan menggunakan kapal. Hasil penelitian menunjukkan bahwa (1) tipologi pesisir Pulau Sempu terdiri atas wave erosion coast, land erosion coast, structurally shaped coast, dan sub-aerial depositional coast,; (2) genesis pesisir Pulau Sempu diawali oleh proses pengangkatan yang meninggalkan jejak cliff, lalu terjadina erosi lahan dan abrasi oleh ombak yang meninggalkan jejak berupa rockfall dan stach, sedangkan genesis mangrove berasal dari substrat lumpur hasil erosi perbukitan; dan (3) dinamika pesisir timur dan selatan Pulau Sempu didominasi oleh proses geodinamika tektonik pada masa lampau dan hidrodinamika ombak dan gelombang laut pada masa sekarang, pesisir barat didominasi oleh morfodinamika erosi dan hidrodinamika gelombang laut, sedangkan pesisir utara bekerja morfodinamika erosi dan sedimentasi.

EVOLUSI TIPOLOGI PESISIR KAWASAN KARST DI PANTAI WATUKODOK KABUPATEN GUNUNGKIDUL

Kajian tentang evolusi tipologi akan sangat membantu dalam melakukan perencanaan pengelolaan di masa mendatang. Hal ini karena kajian tentang genesis suatu wilayah pesisir akan sangat membantu dalam melakukan analisis dinamika pesisir dan kerawanan terhadap bencana. Penelitian ini dilakukan di Pantai Watukodok, Kecamatan Tanjungsari, Kabupaten Gunungkidul yang merupakan objek wisata yang baru dikembangkan. Penelitian ini bertujuan untuk (1) mengetahui tipologi pesisir Pantai Watukodok, dan (2) melakukan rekonstruksi tipologi pesisir Watukodok Kabupaten Gunungkidul. Hasil analisis menunjukkan bahwa tipologi pesisir di Pantai Watukodok terdiri dari marine deposition coast dan wave erosion coast. Evolusi tipologi wilayah Pantai Watukodok dimulai dengan tipologi structurally shaped coast, kemudian berubah menjadi wave erosion coast, dan yang terakhir menjadi marine deposition coast.

COASTAL DYNAMICS OF SINGKAWANG, WEST KALIMANTAN

Morphologically, Singkawang and adjacent area consist of zones beaches, undulating hills, and steep hills. Granitic rocks and alluvium as a based rock of Singkawang coasts. Generally, Singkawang coasts was developed for coastal farms, fishery pond, and beach resorts, where most of these area have been eroded. Geological and physical oceanography condition are the aspects that build the characteristics of Singkawang coast. Human activities also play an important role in managing the equilibrium and dynamics of this coastal region. This research is to determine the dynamics and coastline changes of Singkawang coasts based on the characteristics of the coastal element and sediment. The high erosion was occurred at Semalagi–Cape Bajau. The Cape Bajau - Cape Banjar is relatively stable due to headlands of this coast is characterized by igneous rocks which resistant to the erosion. The Cape Banjar – South Coasts is very intensive erosion coast. Modern shorelines of the Singkawang coast might be as a shallow marine environment which were occurred thousands years ago (pre-Recent). The high of sedimentation process is generated by global sea level change, where was occurred at that time, and might be changed the area become part of the mainland coast of Singkawang. Keywords: coastal dynamics, erosion, sedimentation, Singkawang, West Kalimantan Secara morfologi, Singkawang terdiri atas daerah patai, perbukitan bergelombang, dan perbukitan curam. Batuan granit dan alluvium mengalasi kawasan pesisir Singkawang. Pesisir Singkawang sebagian besar berupa daerah pertanian, tambak ikan, dan tempat wisata yang umumnya merupakan kawasan pantai erosi. Geologi dan oseanografi fisika merupakan aspek yang membentuk karakteristik pantai Singkawang. Aktifitas manusia juga memainkan peranan penting di dalam mengelola kesetimbangan dan dinamika pesisir daerah ini. Penelitian ini untuk mengetahui dinamika dan perubahan garispantai Singkawang berdasarkan karakteristik dan sedimen pantai. Pantai Semalagi – Tanjung Bajau merupakan kawasan pantai erosi kuat. Tanjung Bajau – Tanjung Banjar merupakan kawasan pantai nisbi stabil ujung-ujung TanjungTanjungnya dicirikan oleh batuan beku yang tahan terhadap erosi. Tanjung Banjar – Pantai Selatan merupakan kawasan pantai erosi sangat kuat. Garispantai Singkawang pada saat ribuan tahun sebelum sekarang (pra-Recent) diperkirakan berupa kawasan lingkungan laut dangkal. Karena proses sedimentasi cukup kuat yang ditimbulkan oleh perubahan muka laut global pada saat itu mengubah kawasan tersebut menjadi daratan pantai Singkawang. Kata kunci: Dinamika pantai, erosi, sedimentasi, Singkawang, Kalimantan Barat.

Analisis Preferensi Visual Lanskap Pesisir Daerah Istimewa Yogyakarta untuk Pengembangan Pariwisata Pesisir Menuju pada Pengelolaan Wilayah Pesisir Berkelanjutan

The aim of this research is to analyze of DIY coastal landscape with visual preference analysis for suistanble coastal tourism development and management. The unit of analysis that used is coastal typology. The guideline in deciding the classification of coastal typology is using the Response-Process System with relief/slope, main constructing material, genesis process and dominate process happened in the meantime such as tide, wave and river flow. This response-process system divide the coastal typology into seven classes including coastal typology of land erosion coast, sub aerial deposition coast, volcanic coast, structurally shaped coast, wave erosion coast, marine deposition coast and coast built by organism. The method of SBE (Scenic Beauty Estimation) is used for visual preference analysis, and the method used to compose the policy of costal tourism development is SWOT method. Result shows that all seven coastal typology are found in the coastal area. Land erosion coast and coast built by organism dominate in Gunungkidul coastal area and then in Bantul and Kulon Progo coastal area are dominated by marine deposition coast and sub aerial deposition coast. Volcanic coast, structurally shaped coast, wave erosion coast can only be found in a small area of Gunungkidul coast. Each of this coastal typology has a special land characteristic which can be used to develop its potential. Coast built by organism is very suitable for tourism activity proved by the high score of SBE from the respondents. Recommendation for developing coastal area in area of interest is by developing the coastal natural resources suitable to its physical typology, because this will make the management of coastal area for continuous development easier. Recommendations for coastal management in Gunungkidul including mapping and classification of protected karst area and mineable karst area to secure the run of coastal area management, for coastal management in Bantul using Managed realignment which plans for retreat and adopts engineering solutions that recognise natural processes of adjustment, and identifying a new line of defence where to construct new defences and move seaword model by constructing new defenses seaward the original ones. Last, for Kulon Progo coastal area using hold the line model whereby seawalls are constructed around the coastlines.