Tropical Cyclone (TC) Seroja is a unique tropical cyclone that has significant impacts along its path, such as floods in East Nusa Tenggara and high waves along the southern coast of Indonesia. Research related to ocean responses to tropical cyclones in Indonesia is still limited due to its rarely occurence in Indonesian waters. The responses of the upper ocean to TC Seroja were investigated using multi-satellite remote sensing of sea surface wind (SSW), sea surface temperature (SST), sea surface height anomaly (SSHA), and numerical model of mixed layer depth (MLD) and chlorophyll-a (Chl-a). The SST cooling occurred around the TC Seroja track at 0.5 – 3°C after the storm had passed. During April 3 – 7, 2021, in addition to spatial SST cooling, changes in chlorophyll-a, SSHA, and MLD were also detected. The chlorophyll-a increase to 2.57 mg/m3 and SSHA reached -10 cm. Thus, the MLD was deeper around the eye of the storm during the cyclone and became uniform after the storm passed. These characteristics indicate the upwelling phenomenon induced by the cyclone.
The Indonesia Coral Reef Garden (ICRG) program is announced as a coral reef restoration program which can support the marine tourism sector since the Covid-19 pandemic hit Indonesia, particularly in Bali. A comprehensive survey and preliminary study are necessary to be conducted to decide a suitable point or to avoid a premature choice for the restoration location. Field survey in Nusa Dua, Bali was carried out on November-December 2020 to determine physical and chemical characteristics of seawater which appropriate for coral life. The bathymetry result at Nusa Dua, Bali varied from shallow to middle water depth. Area covered with coral, soft coral, coral and sand, sand, and seaweed on the seabed are found over study area. In the depth close to the seabed, the sea condition of temperature, salinity, pH, turbidity, and DO is 26.04 - 28.48 °C, 33.95 - 34.29 PSU, 7.933 - 7.982, 0.81 - 2.44 FTU, and 4.40 - 4.93 mg/L, respectively. Based on the conformity of water quality, the middle depth region has sufficient condition for coral growth. Simple Addition Weighting method is used for determining potential location. The potential coral implementation is located 3-5 km from Tanjung Benoa and in south of Nusa Dua around 1-3 km from coast.
Penelitian merupakan salah satu bagian dari Tridharma Perguruan Tinggi yang merupakan bagian dari perguruan tinggi. Sebagaimana institusi pendidikan tinggi lainnya, Sekolah Tinggi Meteorologi Klimatologi dan Geofisika (STMKG) juga memiliki kewajiban untuk mengembangkan penelitian sesuai bidang keilmuannya. Analisis kata kunci dilakukan untuk melihat kecenderungan pengajar dalam memilih topik penelitian. Statistik deskriptif tiap program studi memperlihatkan bahwa Prodi Meteorologi dan Prodi Geofisika STMKG cenderung memiliki kata kunci populer yang berulang kali digunakan sebagai topik penelitian. Sedangkan Prodi Klimatologi dan Prodi Instrumentasi MKG cenderung menggunakan kata kunci yang beragam dalam penelitiannya. Berdasarkan analisis spasial diketahui bahwa terdapat beberapa lokasi yang belum secara khusus dijadikan fokus penelitian oleh sivitas akademik STMKG dalam penelitian di bidang Meteorologi, Klimatologi, Geofisika, dan Instrumentasi (MKGI). Mayoritas penelitian memiliki lokus di Pulau Jawa dengan persentase 43% dari keselurahan penelitian di bidang MKGI.
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