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All Journal JPTK: Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Ilmiah Telaah Manajemen JURNAL SAINS PEMASARAN INDONESIA Jurnal Pendidikan dan Pembelajaran Jurnal Guru Membangun Jurnal Ilmiah Ranggagading (JIR) Jurnal S2 Pendidikan Bahasa Inggris CommIT (Communication & Information Technology) Jurnal NERS Forum Geografi JURNAL PENDIDIKAN NUSANTARA INDONESIA Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil AL-FIKR: Jurnal Pendidikan Islam AL-Ishlah : Jurnal Ilmiah Hukum Jurnal Kajian Pembelajaran dan Keilmuan Jurnal Edukasi Khatulistiwa : Pembelajaran Bahasa dan Sastra Indonesia
Martono Martono
Pusat Sains dan Teknologi Atmosfer, LAPAN
Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Nursing Social Sciences Transportation Other

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Journal : Forum Geografi

 1 
Seasonal and Inter Annual Variation of Sea Surface Temperature in the Indonesian Waters Martono, Martono
Forum Geografi Vol 30, No 2 (2016): December 2016
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v30i2.1530

Abstract

Sea surface temperature plays an important role in air-sea interactions. This research was conducted to understand seasonal and interannual variations of sea surface temperature in the Indonesian waters. The data used in this research was daily sea surface temperature in 1986 to 2015 which was obtained from the Physical Oceanography Distributed Active Archive Center - National Aeronautics and Space Administration. Method used in this study was the anomaly analysis. The result showed that the seasonal and interannual variations of sea surface temperature in the Indonesian waters varied. Seasonal variations of SST in the Makasar Strait, Sulawesi Sea, and Halmahera Sea were low. High seasonal variations of sea surface temperature occurred in the southern waters of Java, Timor Sea, Arafura Sea, and Banda Sea, which were allegedly due to the upwelling process. In addition, interannual variation of sea surface temperature in the Indonesian waters fluctuated. From 1986 to 2000, it showed a negative anomaly dominant. Meanwhile, from 2001 to 2015, it showed a positive anomaly dominant. The effect of Indian Ocean Dipole on the fluctuation of sea surface temperature in the Indonesian waters was stronger than ENSO. Within the last 30 years, the sea surface temperature in the Indonesian water indicated a rising trend. The highest sea surface temperature rise occurred in the Halmahera Sea that reached 0.66 OC/30 years and the lowest was in the Timor Sea of 0.36 OC/30 years.
Impacts of Climate Change (El Nino, La Nina, and Sea Level) on the Coastal Area of Cilacap Regency Supriatin, Lilik S.; Martono, Martono
Forum Geografi Vol 30, No 2 (2016): December 2016
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v30i2.2449

Abstract

This research was conducted to determine the impact of El Nino and La Nina on rainfall as well as the impact of El Nino, La Nina, and sea level on coastal flooding in Cilacap Regency. The methods used in this study were statistical analysis and simulation. The results of this study were El Nino caused diminished rainfall in Cilacap regency between 295 to 1665 mm. Meanwhile, La Nina caused surplus rainfall between 189 - 691 mm/year in compared with annual climatological rainfall. When ENSO phenomenon (El Nino) occurred, it caused sea level anomaly to fall, including in 1994, 1997, and 2002 of -11.63 cm, -11.5 cm, and -4.95 cm, respectively. Meanwhile, in La Nina years in 1999 and 2000, the  sea level anomaly enhanced by  2.55 cm and 5.03 cm, respectively. The result of sea level projection by employing simulation model in this study was compared with the simulation results of the IPCC that obtained a correlation coefficient r of 0.99. Based on the simulation results, the 8 (eight) sub-districts in Cilacap Regency located in the coastal area potentially endure flood due to the impacts of global warming and La Nina with a diverse predicted year of occurrence depending on the altitude of each sub-district.
Impacts of El Niño 2015 and the Indian Ocean Dipole 2016 on Rainfall in the Pameungpeuk and Cilacap Regions Martono, Martono; Wardoyo, Teguh
Forum Geografi Vol 31, No 2 (2017): December 2017
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v31i2.4170

Abstract

El Niño and the Indian Ocean Dipole (IOD) are oceanographic phenomena which occur in the tropical Pacific Ocean and the Indian Ocean due to air–sea interactions. These phenomena affect climate variability both regionally and globally. This study was conducted to understand the impacts of El Niño 2015 and IOD 2016 events on rainfall in the Pameungpeuk and Cilacap regions. The data used consists of the NIÑO3.4 index, IOD index, daily rainfall from 1987–2016, daily sea surface temperature from 1987–2016, daily sea surface height from 1994–2016 and pentad sea surface current from 2007–2016. The method used in this research was a descriptive analysis. The results have shown that rainfall in Pameungpeuk and Cilacap was influenced by El Niño 2015 and negative IOD 2016. During El Niño 2015 a decrease in rainfall occurred, whereas during negative IOD 2016 rainfall increased. Rainfall anomalies in the east season and the second transition season during El Niño 2015 in Pameungpeuk reached −107 mm and −374 mm; meanwhile in Cilacap rainfall anomalies reached −111 mm and −218 mm. Conversely, rainfall anomalies during negative IOD 2016 reached 109 mm and 360 mm in Pameungpeuk, and in Cilacap reached 293 mm and 365 mm. Changes in rainfall in Pameungpeuk and Cilacap during El Niño 2015 and negative IOD 2016 events were closely related to the weakening and strengthening of convections in the southern waters of Java.
Impacts of Extreme Weather on Sea Surface Temperature in the Western Waters of Sumatera and the Southern Waters of Java in June 2016 Martono, Martono
Forum Geografi Vol 31, No 1 (2017): July 2017
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v31i1.3066

Abstract

Ocean dynamics is affected by atmospheric conditions. Surface wind is one of atmospheric variables that has an important role in the ocean dynamics. This study was conducted to determine impacts of extreme weather on sea surface temperature in the western waters of Sumatera and the southern waters of Java in June 2016. Daily surface wind (2007-2016), sea surface temperature (1987-2016), sea wave height (1-10 June 2016) and surface current (1994-2016) were analyzed using anomaly analysis to assess the impact of surface winds on surface ocean. The result showed that in June 2016 extreme weather occurred in these waters that was characterized by sea wave height reached 2.6 m. Impacts of extreme weather in these waters cause upwelling intensity weakened that was marked by increase of sea surface temperature. The increases of sea surface temperature in the middle to north of western waters of Sumatera reached 0.9 OC, in the middle to south of western waters of Sumatera reached 1.8 OC and in the southern waters of Java reached 1.6 OC.
Co-Authors a. totok priyadi A.A. Ketut Agung Cahyawan W Abd. Rasyid Syamsuri Abdul Asib Adi Widyatmoko, Adi Afrizal, Ferry Agasasmita, Susan Agung Nusantara Agus Wartiningsih Al Idrus, Syarif Zulkarnain Ali Djamhuri Anggreni, Puspa Anny Tandyo, Anny Antonius Totok Priyadi Ariessanti, ani Dewi Atifudin, Atifudin Aunurrahman Aunurrahman Ayu Wandira Chairil Effendy Christanto Syam Darsita, Darsita DWI SURYANTO Endang Susilowati Eva Purwanti, Eva Fitri Wahyuni Fitriyani, Ellma Hanizar Kuntarti Hastuti, Desriana Hastuti, Milda Henny Sanulita herculanus bahari sindju Hesti Rizfayanti Indri Astuti Iriyadi Iriyadi Karlina, Fransiska Khairullah, Khairullah Kurnianingsih, Ari Laurensius Salem Lesmono, Djon Lestari, Windy Lia Lilik S. Supriatin, Lilik S. Marchus Budi Utomo, Marchus Budi Marzuki Marzuki Melani, Aulia Monika, Monika Neti, Neti Norminawati, Siti Nugroho, Radityo Tri Nur Metasari Nurhajijah, Nurhajijah Oktavia, Bintari Oktavianingsih, Wulan Parlindungan Nadeak Perawati, Nepa Permada, Arie Rachmiati, Ami Siti Redsidayanti, Fery Ripan Purnanda Rismayanti, Syarifah Devi Rochadi, Mochammad Tri Saputra, Harjun Saputri, Triek Wahyuda Sartika Sartika Satino Satino Selviana Mangguali Sesilia Seli Setiawan Assegaff Sri Mulyani Stefanus Santosa Sudiro Sudiro Sumiati, Oni Suroso Suroso Syambasril . Syambasril, Syambasril Syariah, Syariah Tiurmina Br Tambunan Totok Priyadi Tuti Sumiati, Tuti Wagiran Wagiran Wardoyo, Teguh Wati Wati WINDHA WINDHA Yuliana Yuliana Yulira, Reni Yunita Yunita Yuniwati Yuniwati, Yuniwati Yusvia, Dona Yolanda