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All Journal Jurnal Teknik Sipil MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Ilmiah Desain & Konstruksi Jurnal Teknik Pengairan: Journal of Water Resources Engineering Journal of the Civil Engineering Forum Civil Engineering Journal Jurnal Irigasi Civil and Environmental Science Journal (CIVENSE) Jurnal Aplikasi Teknik Sipil Jurnal Rekayasa Sipil Jurnal Teknik Sipil JURNAL SUMBER DAYA AIR Jurnal Teknik Sumber Daya Air Jurnal Sains dan Teknologi Tadulako Jurnal Forum Teknik Sipil Jurnal Lembaga Pengabdian Kepada Masyarakat Undana
Denik Sri Krisnayanti
Civil Engineering Study Program, Nusa Cendana University
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Social Sciences Transportation

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Journal : JURNAL SUMBER DAYA AIR

 1 
ANALISIS NILAI KOEFISIEN LIMPASAN PERMUKAAN PADA EMBUNG KECIL UNTUK PERTANIAN DI PULAU FLORES BAGIAN TIMUR Denik Sri Krisnayanti
JURNAL SUMBER DAYA AIR Vol 14, No 2 (2018)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (541.575 KB) | DOI: 10.32679/jsda.v14i2.325

Abstract

Pulau Flores bagian timur yakni di daerah Kabupaten Flores Timur, Sikka, Ende, dan Nagekeo merupakan kawasan yang masuk dalam kategori semi-arid. Daerah tersebut memiliki curah hujan rata-rata bulanan yang hanya berkisar antara 57,17 188,08 mm/bulan, sementara evapotranspirasi rata-rata bulanan yang terjadi lebih tinggi, yakni berkisar antara 164,91 185,57 mm/bulan. Oleh karena itu, jumlah ketersediaan air pada musim kemarau cukup rendah, sehingga perlu dilakukan upaya pemanenan air hujan dengan memperbesar kapasitas tampungan permukaan. Salah satu alternatif yang tepat ialah dengan membangun embung. Parameter penting dalam perhitungan ketersediaan jumlah air pada embung ialah nilai koefisien limpasan. Tujuan dari penelitian ini ialah untuk mendapatkan nilai koefisien limpasan permukaan pada 15 buah embung di Pulau Flores bagian timur dengan menggunakanan data curah hujan dan data klimatologi terbaru.Berdasarkan hasil perhitungan dengan menggunakan metode analisis matematis diperoleh nilai koefisien limpasan permukaan pada embung kecil di Pulau Flores bagian timur berkisar antara 0,00 - 0,72. Untuk nilai koefisien limpasan permukaan terendah terjadi pada bulan November yang hanya berkisar antara 0,00 0,39 dan nilai koefisien limpasan tertinggi terjadi pada bulan Januari yakni berkisar antara 0,48 0,72.
Evaluasi Kesesuaian Data Tropical Rainfall Measuring Mission (TRMM) dengan Data Pos Hujan Pada Das Temef di Kabupaten Timor Tengah Selatan Denik Sri Krisnayanti; Davianto Frangky B. Welkis; Fery Moun Hepy; Djoko Legono
JURNAL SUMBER DAYA AIR Vol 16, No 1 (2020)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v16i1.646

Abstract

The construction of the Temef Dam in Oenino Village, Oenino District, and Konbaki Village, Polen District, South Central Timor Regency requires long and reliable rainfall data. To overcome the minimum data or the unavailability of automatic rainfall (ARR) and discharge data in the past decades, the use of Tropical Rainfall Measuring Mission (TRMM) satellite data is foreseen. The accuracy of TRMM data is obtained when the parameters of suitability and compatibility of TRMM are in a good agreement with the ARR. For the Temef watershed, there are six rainfall stations that were reviewed, namely Fatumnasi, Oeoh, Noelnoni, Polen, Nifukani, and Batinifukoko rainfall stations. Direct comparisons of rainfall data were conducted for 20 years (1998-2018) with temporal resolution on a monthly and daily basis. The results of the study show that the rainfall patterns in the TRMM data product (version 3B42V7) tend to be consistent with 3 rainfall stations in the Temef watershed namely Noelnoni, Fatumnasi, and Batinifukoko. A correlation coefficient of 0.505 – 0.813 was obtained from TRMM data calibration at monthly basis while a correction factor level of 0.0056 - 0.0129 was obtained for daily.  The calibration on the annual maximum daily rainfall data resulted in a correction factor of 0.0298 - 0.2516. Monthly and daily TRMM data fit well with the data of 3 rainfall stations. However, the Noelnoni rainfall station showed poor results on the annual maximum daily rainfall.Keywords: TRMM data, ARR data, correction factor, correlation coefficient
ANALISIS KEKERINGAN METEOROLOGI DENGAN MENGGUNAKAN METODE STANDARDIZED PRECIPITATION INDEX DI KUPANG – NUSA TENGGARA TIMUR Denik Sri Krisnayanti; Mirnawati S Pasoa; Remigildus Cornelis
JURNAL SUMBER DAYA AIR Vol 19, No 1 (2023)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v19i1.793

Abstract

ABSTRACT Kupang City and Kupang Regency have semiarid climatological conditions where annual rainfall ranges from an average of 1,250 mm/year. Kupang City and Kupang Regency experience long days without rain, which potentially causes meteorological drought. The study aims to determine the value and distribution of the drought index in Kupang City and Kupang Regency. This study uses the Standardized Precipitation Index (SPI) method using rainfall data for 21 years (1998-2018) from 12 rainfall stations, while the mapping uses ArcGIS Software. The results obtained from this study are the extreme level of drought in Kupang Regency and Kupang City occurred in 2015-2016. A 1-month SPI Kupang City experienced the highest drought in January 2004 at -3.48, while Kupang Regency occurred in November 2015 at -3.06.  The 3-month SPI Kupang City experienced the highest drought in January 2016 at -3.85, while Kupang Regency occurred in December 2012 at -4.13. The 6-month SPI of  Kupang City experienced the highest drought in January 2016 at -4.04, while Kupang Regency occurred in November 2015 at -4.82.  The 12-month SPI Kupang City experienced the highest drought in March 2016 at -3.76, while Kupang Regency occurred in April 2016 at -3.36. The 6-month SPI tends to fluctuate more in value than the 1-month SPI, 3-month SPI, and 12-month SPI. The drought years that occurred in 2015 – 2016 triggered forest and land fires in Kupang City. Besides that,  the Meteorological drought must be anticipated by setting appropriate cropping patterns to avoid food insecurity. Keywords: Drought, semiarid, land fires, mapping ABSTRAKKota Kupang dan Kabupaten Kupang merupakan daerah yang memiliki kondisi klimatologi semi-ringkai dimana curah hujan tahunan berkisar rata-rata 1.250 mm/Tahun. Kota Kupang dan Kabupaten Kupang mengalami hari tanpa hujan yang panjang sehingga berpotensi menyebabkan kekeringan meteorologis. Studi ini bertujuan untuk mengetahui nilai dan hasil sebaran indeks kekeringan di Kota Kupang dan Kabupaten Kupang. Analisis ini menggunakan Metode Standardized Precipitation Index (SPI) dengan menggunakan data curah hujan selama 21 tahun (1998-2018) dari 12 pos hujan, sedangkan pemetaan menggunakan Software ArcGIS. Hasil yang didapatkan adalah tingkat kekeringan terparah terjadi di Kabupaten Kupang dan Kota Kupang terjadi tahun 2015-2016. Untuk perhitungan SPI-1, Kota Kupang mengalami kekeringan tertinggi pada bulan Januari tahun 2004 sebesar -3,48, sedangkan Kabupaten Kupang terjadi pada bulan November tahun 2015 sebesar -3,06. Pada perhitungan SPI 3, Kota Kupang mengalami indeks kekeringan tertinggi pada bulan Januari tahun 2016 sebesar -3,85, sedangkan Kabupaten Kupang terjadi pada bulan Desember tahun 2012 sebesar -4,13. Pada perhitungan SPI-6, Kota Kupang mengalami indeks kekeringan tertinggi pada bulan Januari tahun 2016 sebesar -4,04, sedangkan Kabupaten Kupang terjadi pada bulan November tahun 2015 sebesar -4,82. Pada perhitungan SPI-12, Kota Kupang mengalami indeks kekeringan tertinggi pada bulan Maret tahun 2016 sebesar -3,76, sedangkan Kabupaten Kupang terjadi pada bulan April tahun 2016 sebesar -3,36. Indeks kekeringan SPI-6 cenderung lebih fluktuatif dibandingkan SPI-1, SPI-3, dan SPI-12. Kondisi tahun kering yang pernah terjadi tahun 2015 – 2016 memicu timbulnya kebakaran hutan dan lahan di Kota Kupang. Selain itu, kekeringan meteorologi harus diantisipasi dengan pengaturan pola tata tanam yang tepat guna menghindari rawan pangan.
PEMETAAN POTENSI SUMBER DAYA AIR UNTUK PERTANIAN LAHAN PRODUKTIF (STUDI KASUS: DESA KAMBUHAPANG DAN DESA KAMBATAWUNDUT) Wilis, Kezia Georginia Patricia; Krisnayanti, Denik Sri; Cornelis, Remigildus
JURNAL SUMBER DAYA AIR Vol 20, No 2 (2024)
Publisher : Direktorat Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v20i2.892

Abstract

Desa Kambuhapang and Desa Kambatawundut are villages located in the Lewa District of East Sumba Regency. This area is characterized by arid conditions and experiences an 8-month-long dry season. Most of the population in this region is engaged in agriculture, particularly dryland farming. The main water supply for agriculture in this area comes from low rainfall, resulting in limited water availability. The purpose of this study is to assess the water discharge potential in these two villages. Secondary data, including rainfall data, was obtained from two stations: the Waingapu meteorological station and the Lewa Paku rain station. Additionally, climatological data from 2012 to 2021 was used. ArcGIS 10.7 software was employed to map the area using Digital Elevation Model (DEM) data. The Modified Penman method was used to determine evapotranspiration, while the F.J. Mock method was applied to calculate the reliable discharge. The results showed that the average annual water availability, according to the F.J. Mock method, is 16.45 m³/s for the Lay Mbeda River and 16.54 m³/s for the Wai Wei River. The villages of Kambuhapang and Kambatawundut have sufficient water availability, with a total of 74.18% across an area of 63.12 km². The adequate water availability in these two villages is evident from the minimum discharge during the dry season, ranging from 6.60 to 7.12 m³/s. This indicates that the villages have sufficient water resources to support the expansion of productive agricultural land for the local community. The utilization of these water resources could be further optimized by providing supporting infrastructure to increase runoff storage, such as water reservoirs, small ponds, or retention basins.Keywords: mapping, water potential, water availability, waingapu, lewa paku
ANALISIS KEKERINGAN METEOROLOGI DENGAN MENGGUNAKAN METODE STANDARDIZED PRECIPITATION INDEX DI KUPANG – NUSA TENGGARA TIMUR Krisnayanti, Denik Sri; Pasoa, Mirnawati S; Cornelis, Remigildus
JURNAL SUMBER DAYA AIR Vol 19, No 1 (2023)
Publisher : Direktorat Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v19i1.793

Abstract

 Kupang City and Kupang Regency have semiarid climatological conditions where annual rainfall ranges from an average of 1,250 mm/year. Kupang City and Kupang Regency experience long days without rain, which potentially causes meteorological drought. The study aims to determine the value and distribution of the drought index in Kupang City and Kupang Regency. This study uses the Standardized Precipitation Index (SPI) method using rainfall data for 21 years (1998-2018) from 12 rainfall stations, while the mapping uses ArcGIS Software. The results obtained from this study are the extreme level of drought in Kupang Regency and Kupang City occurred in 2015-2016. A 1-month SPI Kupang City experienced the highest drought in January 2004 at -3.48, while Kupang Regency occurred in November 2015 at -3.06.  The 3-month SPI Kupang City experienced the highest drought in January 2016 at -3.85, while Kupang Regency occurred in December 2012 at -4.13. The 6-month SPI of  Kupang City experienced the highest drought in January 2016 at -4.04, while Kupang Regency occurred in November 2015 at -4.82.  The 12-month SPI Kupang City experienced the highest drought in March 2016 at -3.76, while Kupang Regency occurred in April 2016 at -3.36. The 6-month SPI tends to fluctuate more in value than the 1-month SPI, 3-month SPI, and 12-month SPI. The drought years that occurred in 2015 – 2016 triggered forest and land fires in Kupang City. Besides that,  the Meteorological drought must be anticipated by setting appropriate cropping patterns to avoid food insecurity. Keywords: Drought, semiarid, land fires, mapping 
Co-Authors A. Nursyam, Nurul Alvine C. Damayanti Alvine C. Damayanti Alvine C. Damayanti Alvine Cinta Damayanti Ananda, Yokti Anang Galang Anargi Djalil Mangu Andi H. Rizal Andi Kumalawati Chrystin Chandra Chrystin Chandra Costandji Nait Dantje A. T. Sina Davianto F. Welkis Davianto Frangky B. Welkis Davianto Frangky B. Welkis Decaprio, Alex Demonsa Bintang Putra Lende Djoko Legono Djoko Legono Dolly W. Karels Elia Hunggurami Eugenius Nino Mbauth Fery Moun Hepy Forisman R. Nomnafa Galla, Andrea Z. Hamdan Nurdin Hangge, Elsy E. Henry Jefrison Benu I Made Udiana I Made Udiana I Made Udiana Jacob Kedoh John H. Frans John Hendrik Frans Jordy Georgia Makunimau Judi K Nasjono Judi K. Nasjono Jusuf J. S. Pah Khaerudin, Dian Noorvy Klau, Ralno R. Klau, Ralno Robson Lomi, Desinta Banni M. Solichin Maulana, Mahendra Andiek Megonondo, Batara Doa Mirnawati S Pasoa Munaisyah, Farah Nichorids S Saudale Pah, Jusuf J.S Partogi H. Simatupang, Partogi H. Pasoa, Mirnawati S Philipi de Rozari Remigildus Cornelis Rohi D. Radja Pono Rosmiyati A Bella Ruslan Ramang Ruslan Ramang SATRIYAS ILYAS Seran, Yustinus A. Sereh, David Peterson Sri Wahyuni Suhardjono Suhardjono Syamsumarlin, . Taopan, Angelio A Tatas, Tatas Tri M. W. Sir Tri M.W. Sir Tri M.W. Sir Very Dermawan Vilkanova C. Garu Wilhelmus Bunganaen Wilhelmus Bunganaen Wilhelmus Bunganaen Wilhelmus Bunganaen Wilhelmus Bunganaen Wilhelmus Bunganaen Wilis, Kezia Georginia Patricia Willem Sidharno Yerison Dimu Ratu Yunita A. Messah Yustinus Akito Seran