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Seni Herlina J. Tongkukut
Sam Ratulangi University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Mathematics Physics

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IDENTIFIKASI POTENSI KEJADIAN PETIR DI SULAWESI UTARA Seni Herlina J. Tongkukut
JURNAL ILMIAH SAINS Volume 11 Nomor 1, April 2011
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (560.438 KB) | DOI: 10.35799/jis.11.1.2011.39

Abstract

Telah dilakukan identifikasi potensi kejadian petir di Sulawesi Utara dengan menggunakan data hasil pendeteksian kejadian hari petir sejak tahun 2000 sampai 2008. Pendeteksian kejadian hari petir dilakukan oleh BMKG Sulawesi Utara di stasiun Manado, Bitung, Tondano, Naha dan stasiun Gorontalo. Data yang telah diolah disajikan dalam bentuk peta Iso Keraunik Level (IKL) yang menggambarkan tingkat potensi petir masing-masing daerah pengamatan. Diperoleh hasil bahwa Sulut banyak mengalami kejadian hari petir sepanjang tahun 2000-2008 khususnya Bolaang Mongondow Utara, Tondano dan Manado. Tingkat potensi petir tertinggi meliputi Bolaang Mongondow Utara dan Gorontalo sebesar 48% disusul Tondano 42% lalu Manado sebesar 38%, Bitung 17% dan terakhir Naha 11%. IDENTIFICATION OF THE POTENTIAL FOR LIGHTNINGOCCURRENCE IN NORTH SULAWESIABSTRACTIdentification of the potential for lightning occurrence in North Sulawesi using the data detection result from 2000 until 2008. The detection of lightning events were conducted by BMKG stations of Manado, Bitung, Tondano, Naha and Gorontalo. The processed data were presented in the map of the isocronic level that described the lightning potential level in each observation location. The results indicated that North Sulawesi experienced many lightning events during 2000-2008, especially in North Bolaang Mongondow, Tondano and Manado. The highest potential level of lightning was North Bolaang Mongondow as well as Gorontalo (48%), followed by Tondano (42%), Manado (38%), Bitung (17%), and the lowest was Naha (11%).
El-NINO DAN PENGARUHNYA TERHADAP CURAH HUJAN DI MANADO SULAWESI UTARA Seni Herlina J. Tongkukut
JURNAL ILMIAH SAINS Volume 11 Nomor 1, April 2011
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.598 KB) | DOI: 10.35799/jis.11.1.2011.51

Abstract

Telah dilakukan analisis El-Nino dan pengaruhnya terhadap curah hujan di Manado Sulut dengan menggunakan data curah hujan bulanan dan Southern Oscillation Index SOI selama thn 1999-2009. Data curah hujan diperoleh dari BMKG Kayuwatu Manado Sulut dan data SOI diunduh dari website Biro Meteorologi Australia BoM. Analisis dilakukan dengan analisis regresi linear sederhana. Diperoleh hasil bahwa curah hujan kota Manado secara umum dari thn 1999-2008 dipengaruhi oleh SOI namun pada thn 2009 ketika terjadi El-nino, curah hujan bulanan Manado tidak dipengaruhi oleh efek El-nino. Hal ini karena pada saat yang sama suhu muka laut perairan Indonesia juga menghangat. EL-NINO AND ITS EFFECT ON RAINFALL IN MANADONORTH SULAWESIABSTRACTAnalysis of El-Nino and its effect on rainfall in Manado, North Sulawesi, using monthly rainfall data and the Southern Oscillation Index SOI during the years 1999-2009 has been carried out. Rainfall data obtained from BMKG Kayuwatu Manado and SOI data downloaded from the website of Australian Bureau of Meteorology (BoM). The analysis was performed with simple linear regression analysis. The results obtained indicate that rainfall in Manado , in general, was influenced by SOI from the years 1999-2008, but when there is an El-Nino in 2009, monthly rainfall in Manado is not affected by the El-Nino effect. This is due to, at the same time, sea surface temperature in Indonesian territory are also warm.
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