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POLA DISTRIBUSI HUJAN DAN PENGARUHNYA TERHADAP PENYIMPANGAN HIDROGRAF BANJIR DAS JANGKOK HUMAIRO SAIDAH; M. BAGUS BUDIANTO; I WAYAN YASA; ERY SETIAWAN
GANEC SWARA Vol 17, No 1 (2023): Maret 2023
Publisher : Universitas Mahasaraswati K. Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v17i1.397

Abstract

Determining the rain pattern distribution is believed to affect the design flood. Providing hourly rainfall observations can be obtained, and the distribution patterns can be determined. However, in areas that do not have one, flood discharge calculations are carried out by distributing daily rainfall using empirical methods. This study distributes daily rainfall into hourly rainfall in the Jangkok watershed using ABM and Mononobe methods and calculates the flood hydrograph using the Nakayasu model. The synthetic unit hydrograph obtained from the actual rain distribution is then compared with the unit hydrograph generated from the empirical distribution, then the deviation is measured. The results showed that the Mononobe and ABM rain distribution gave the same hydrograph shape as the observation one, only for 2 hours of rain duration. As long as the rain lasts 3-6 hours, the peak flood discharge (Qp) tends to be lower, 7-20% for Mononobe and  2-7% for ABM. Then the Qp becomes overestimated (5-12%) for a rain duration of >6 hours. Mononobe gives the same flood peak time (Tp) as observation rain for 1-5 hours rain duration and becomes 1 hour earlier for >6 hours. In contrast, ABM produces peak times 1 hour longer than hydrographs with observation rain. Generally, the two methods provide a more significant hydrograph deviation for a longer duration of rain.
SEBARAN KEKERINGAN HIDROLOGI BERDASARKAN DEBIT ALIRAN DI KABUPATEN BIMA I WAYAN YASA; AGUSTONO SETIAWAN; I DEWA GEDE JAYA NEGARA; HUMAIRO SAIDAH; ANNISA HUMAYRA DIRGANTARA
GANEC SWARA Vol 17, No 1 (2023): Maret 2023
Publisher : Universitas Mahasaraswati K. Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v17i1.371

Abstract

A phenomenon that often occurs in Indonesia which is also an annual disaster that hit several areas is drought. Drought is a condition in which an area, land, or community experiences a shortage of water so that it cannot meet their needs. Drought can be caused because an area does not experience rain or is dry for a long period of time or the rainfall is below normal, so that the water content in the soil is reduced or even non-existent. The areas to be analyzed are the Hidirasa watershed, the Rontu watershed, and the Jangka watershed in Bima Regency, West Nusa Tenggara. The analysis drought  aims to determine the deficit, drought duration, drought criteria based on deficits and surpluses that occur by analogy to Oldeman's criteria, hydrological drought index analysis, and hydrological drought distribution maps. In this study, data were used for the Tawali watershed in the Hidirasa watershed, the Sari watershed for the Jangka and the Kumbe water for the Rontu watershed to determine the Q50 and Q80 thresholds using the method Flow Duration Curve (FDC) to obtain hydrological drought characteristics. In the analysis of hydrological drought in several watersheds in Bima Regency, the results show that the maximum deficit in the Hidirasa, Term and Rontu watersheds was 1.09 m³/s, 0.14 m³/s, 0.49 m³/s which occurred in 2001, 1995, and 2001. From the deficit, it was found that the average drought period occurred 8-9 months from May to December and even some until January which indicated that the drought criteria were in zone 2 according to Oldeman. The largest hydrological drought index is the Hidirasa watershed, the Jangka Watershed and the Rontu watershed, respectively, -0.45, -1.00, -1.00, with a very strong drought category.
PEMBERDAYAAN PEREMPUAN MELALUI PELATIHAN PENGOLAHAN PANGAN BERBAHAN LOKAL DI DESA JELANTIK KABUPATEN LOMBOK TENGAH Humairo Saidah; Lilik Hanifah; Heri Sulistiyono; Shofia Rawiana; Agus Suroso
Jurnal Abdi Insani Vol 10 No 1 (2023): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v10i1.835

Abstract

Jelantik Village has several community groups of tofu tempe producers, with each group's production capacity reaches 650 kg/day. As small-medium scale enterprises, the tofu tempe industry can employ the community, but the waste causes environmental problems. On the other hand, there are still many residents around the industry who are classified as economically weak. Along with the development of science and technology, pulp, a by-product of tofu and tempeh factories, has been extensively researched and modified for various nutritious processed foods. The training activity aims to empower the community around the factory, especially mothers, to use tofu waste in processed foods of high value, such as crackers, nuggets and sticks. Besides being abundantly available and cheap, tofu dregs still have good nutritional content. The training was carried out by transferring technical information on the manufacture of products to mothers in the environment around the tofu and tempeh factories. In addition to the manufacturing engineering process, the training also provides knowledge about packaging and marketing. The results obtained from this activity are that the community can use tofu dregs in crackers, nuggets and sticks. The community was enthusiastic about welcoming the team and eager to participate in the training process. The training can also answer some technical problems community in producing similar products. Currently, the assisted community groups have been able to produce crackers, nuggets and sticks made from tofu dregs and are preparing to form an entrepreneurial group together.
Evaluasi Kinerja Metode Perhitungan Koefisien Pengaliran: Evaluation of Runoff Coefficient’s Calculation Methods Performance Humairo Saidah; Lalu Wirahman; Lia Hidayaturrohmi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 1 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i1.405

Abstract

The runoff coefficient dramatically affects the volume of surface runoff. The better the method for determining the runoff coefficient, the more precise the estimation of the amount of surface runoff will be so that it can support planning for the management of water resources in an area more effectively. Several runoff coefficient calculation techniques, such as the U.S. Forest Service method, Hassing and Cook use different approaches to produce runoff coefficients. This study examines the accuracy of those methods in producing runoff coefficients by comparing the coefficients obtained from the methods with the actual flow coefficients obtained from measurement data. The results showed that the closest runoff coefficient to the coefficient of measurement one is by the U.S. Forest Service method using the median of the value intervals provided in the USFS table. The second and third best methods are the Hassing and U.S. Forest Service for maximum value.
Analisis Karakteristik Aliran Irigasi Perforasi Pada Lahan Datar: Analysis of Perforated Irrigation Flow Characteristics on Flat Land I Dewa Gede Jaya Negara; Anid Supriyadi; Agus Suroso; Humairo Saidah; Heri Sulistiyono; Abdi Fadillah
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 1 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i1.424

Abstract

Perforation irrigation is a unidirectional beam irrigation system that can be used for crop irrigation on dry land, due to the efficient use of water and the ability to wet land with a limited area. Therefore, the perforation irrigation system needs to be studied further in relation to the area of land that can be irrigated and the distribution of discharge to each perforated pipe. By testing several variations of the water level, the perforation irrigation emission capability will be obtained in the form of irrigation distribution, uniformity, emission capability and discharge amount used in irrigation on flat land. This study aims to determine the perforation irrigation capacity on flat land, the distribution of irrigation and the amount of discharge required. The test was carried out on three perforated pipes made of ½” PVC as lateral pipes, three transmission pipe length variations, such as 0.8m, 1m, and 1.2m with a distance between the perforations of 60 cm. The source of irrigation water comes from a 3 m tall tower with a capacity of ± 200 ????????????????????. The test uses three variations of head height, namely h1 350 cm, h2 360 cm, h3 370 cm and h4 380 cm. The results showed that the perforation irrigation jet length was around 100cm -120 cm, the uniformity of CU irrigation was above 97% with a total discharge on h1 QT = 0.689 lt/s, h2 QT = 0.690 lt/s , h3 QT = 0.695 lt/s and on h4 QT = 0.701 lt/s. While the range of flow rates for perforation 1 pipe Q1 (0.42 lt/s – 0.429 lt/s), perforation 2, Q2 (0.13 -0.145 lt/s) and perforation 3, Q3 (0.129 - 0.135 lt/s)
The Climate Change Impact on Drought Characteristics in North Lombok Regency Humairo Saidah; Lilik Hanifah; I Dewa Gede Jaya Negara
Jurnal Penelitian Pendidikan IPA Vol 9 No 5 (2023): May
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i5.2380

Abstract

Lombok Island is part of Indonesia which has a high vulnerability to drought. The area that often experienced drought severely on Lombok Island is North Lombok Regency. This study wants to examine the effect of climate change on drought characteristics in this region using the standardized precipitation index method using four rain stations in the North Lombok region rainfall recording data of 20 years (1999-2018). The analyses were taken into two groups of a 10-year time scale, 1999-2008 and 2009-2018, to overview both of the 10-years drought characteristics. Drought index values ​​were observed on a period of 1-month (SPI1), 3-months (SPI3), and 6-months (SPI6) to get the map of drought duration, drought magnitude, drought intensity, and relative frequency. The results show that the drought characteristics in Lombok showed a decrease significantly in all measurement parameters used. The SPI3 results have shown the drought duration was decreasing in the last 10 years by 87%, from 2,43 to 0.03 months. The strength of the drought decreased by 88%, from -1.03 to 0.12 (severely dry to normal). Then the drought intensity became lower up to 87% from -0.22 to -0.03 monthly, and the relative frequency of drought events decreased by 83%. Signs of the decline were further followed by the same decreasing trends in the 6-month drought index, SPI6. The decrease in the drought parameter index illustrates that climate change impact has reduced the risk of drought disaster on the island of Lombok in the future
PELATIHAN PEMBUATAN LAHAN PERTANIAN PEPAYA CALIFORNIA DENGAN IRIGASI TETES DI DESA SELENGEN KABUPATEN LOMBOK UTARA I Dewa Gede Jaya Negara; Kadek Wiratama; I Wayan Yasa; Humairo Saidah; Anid Supriyadi; Suparjo Suparjo
Jurnal Pepadu Vol 4 No 2 (2023): Jurnal Pepadu
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v4i2.2645

Abstract

Pengembangan pertanian di lahan kering,sangat menjanjikan jika masyarakat mau tekun melakukan pertanian dengan lebih intensif, dan untuk mendorong kepekaan masyarakat tentang potensi lahannya perlu diberikan pelatihan-pelatihan terkait dengan pemanfaatan lahannya. Dusun Tampes merupakan wilayah desa Selengan yang memiliki potensi lahan kering yang perlu dikembangkan, dengan adanya lahan yang banyak tidak tergarap perlu dimotivasi untuk mau melakukan usahatani pada lahan tersebut. Pengabdian ini bertujuan untuk memberikan pelatihan pembuatan lahan untuk penanaman papaya California pada masyarakat dusun Tampes yang berdomisili di sekitar sungai. Dengan harapan lahan tanam yang dibuat nantinya dapat dilanjutkan dengan penanaman bibit papaya, untuk membantu ekonomi masyarakat setempat, karena tanaman ini mempunyai masa panen cukup panjang dan harga jual buanya cukup bangus. Untuk itu karena lahan ini berpasiran sehingga sangat boros air maka perlu diinisiasi penggunaan air irigasi yang efisien seperti sistem tetes. Untuk hal tersebut maka pelatihan oleh tim Unram dilakukan dalam jangka waktu 2 minggu yang mencakup survey lapangan, persiapan pelatihan, pelaksanaan pelatihan dan evaluasi. Pelatihan terdiri dari pembersihan lahan, pembuatan petak lahan dan bedengan, dan pembuatan lubang tanam. Berdasarkan hasil pelatihan diketahui bahwa warga telah mampu membuat lahan tanam papaya. Sedangkan evaluasinya adalah keberhasilan dari masing-masing peserta alam membuat lahan tanam. Berdasarkan hasil pelatihan bahwa peserta telah berhasil melakukan pembuatan lahan papaya dengan luasan seluas sekitar 2 ha dengan jumlah warga berpartisipasi sebanyak 26 orang. Dengan fakta ini peserta telah berhasil dilatih untuk membuat lahan awal untuk penanaman papaya California, yang akan dilakukan lebih lanjut. Dengan berhasilnya kegiatan ini, maka tim memberi arahan agar nantinya dapat dilanjutkan dengan pengisian pupuk kompos masing-masing sehingga bisa dilakukan penanamn bibit papaya di lahan masing-masing
Kemampuan Penyerapan dan Reduksi Lengas Tanah Pada Media Polybag Kombinasi Tanah dan Kompos: Soil Moisture Absorption dnd Reduction Capability In Polybag Media Combination of Soil and Compost I Dewa Gede Jaya Negara; Salehudin Salehudin; Suparjo Suparjo; Anid Supriyadi; Humairo Saidah; Lalu Dwiki Axela Andriawan
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 2 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i2.447

Abstract

Soil moisture is an important factor needed by plants for growth, and therefore the amount of soil moisture that can be stored depends on the type of soil or the composition of the soil-forming materials. Compost is one of the nutrients that is often used in the manufacture of planting media on land in the form of polybags, and the amount of compost composition on the soil is thought to greatly affect the ability to store water in the media. This study aims to test drip irrigation on a mixture of compost and soil on storage of irrigation water. Tests were carried out at a ratio of 70%: 30%, 50%: 50% and 30%: 70%. Irrigation was tested at a duration of 5 minutes, 10 minutes, and 15 minutes, and the data analyzed included irrigation distribution data, discharge, soil moisture data (w) and daily soil moisture change data. The results of the analysis are presented in the form of tables and graphs, then discussed and concluded descriptively. The results of the analysis show that the flow rate obtained is greater if the difference in water level to the land is greater, and the average Cu value obtained is 95.79% which is very good. With initial soil moisture in the range of 19%-25, soil moisture gain obtained by drip irrigation for 5 minutes -10 minutes is around 12%, and for a duration of 15 minutes soil moisture gain is obtained by 8% -21%. The lowest recharge was obtained on land with 30% soil and 70% compost of 8%-12%. The amount of soil moisture reduction after 24 hours of irrigation test was 6% - 17%, the lowest reduction was at 70% compost and 30% soil around 6%.
APLIKASI METODE RUN UNTUK PEMANTAUAN KEKERINGAN METEOROLOGIS DI KECAMATAN PUJUT KABUPATEN LOMBOK TENGAH HUMAIRO SAIDAH; AGUSTONO SETIAWAN; MUH. BAGUS BUDIANTO
GANEC SWARA Vol 18, No 2 (2024): Juni 2024
Publisher : Universitas Mahasaraswati K. Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v18i2.905

Abstract

Drought is a disaster frequently experienced in Pujut District, Central Lombok Regency. Almost every year, this area suffers from prolonged drought. This study was conducted to understand the characteristics of the droughts that occur, using a widely recognized drought assessment method as an effort to mitigate drought disasters in this region. The drought assessment used in this study is the Run method. This method was chosen due to its simplicity and the fact that it only requires rainfall data for its analysis. The results of the calculations for the depth and duration of the drought period are then compared with past droughts in the region and the natural phenomena that influenced them. The analysis using the Run method shows that the most severe and longest drought occurred at Pujut District from July 1997 to May 1998 (11 months) with a deficit of 800 mm from the average normal rainfall, and from 2014 to 2015 with a deficit of 553.54 mm. Both extreme droughts in 1997 and 2015 occurred in various regions of Indonesia and were related to the strong El Niño phenomenon occurred at that time
Validitas data curah hujan produk satelit IMERG terhadap data curah hujan terukur di wilayah Bima dan Dompu Rostihanji; Humairo Saidah
PADURAKSA: Jurnal Teknik Sipil Universitas Warmadewa Vol. 12 No. 2 (2023)
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/pd.12.2.6461.137-152

Abstract

Complete rainfall data for an extended period is needed to facilitate hydrological analysis. However, there are many obstacles to obtaining the measurement rainfall data as a limitation of rain gauges, especially in remote areas. This study aims to determine the accuracy of rainfall data estimated by the IMERG (Integrated Multi-satellitE Retrievals for GPM) satellite and obtain a correction factor to improve its compatibility with measured rainfall data. The IMERG satellite rain data was corrected using the regression method and the average ratio. The accuracy of the IMERG satellite rain data against the measured rain data is measured from the NSE, R, RMSE, and RB values. The analysis results show that the accuracy of the GPM satellite daily rain data is very low but improving for the ten-daily and monthly periods. Generally, the best correction factors for daily, ten-daily, and monthly periods are obtained using simple linear regression methods and 2nd-order polynomials. The corrected IMERG satellite rain data increase in accuracy, where the monthly rainfall data performs well, the ten-daily data generally complies, and the daily data has not shown good performance. The average values of NSE, R, RMSE, and RB for daily data are 0.14 (poor), 0.37 (weak), 9.18 mm, and -0.12%, respectively; for ten-daily data respectively, 0.40 (fair), 0.63 (strong), 39.42 mm, and 1.47%; and for monthly data are 0.55 (fair), 0.74 (strong), 80.19 mm, and -0.07%. The ten-daily and monthly rainfall data from the IMERG satellite can be used as a rain source data alternative in the Bima and Dompu areas by applying a correction factor.
Co-Authors - - Akmaluddin Abdi Fadillah Adhitya Halim .P Agastya, Dewandha Mas Agung Budi Muljono Agus Soroso Agus Suroso Agus Suroso Agus Suroso Agus Suroso Agus Suroso Agustono Setiawan AGUSTONO SETIAWAN Aini, Rohadatul Akbari, Gilang Zulfa Akmaludin Akmaludin, Akmaludin Alawiyah, Tutik Ali, Ahmad Muhammad Ali, AM Alit, I Dewa Made ANID SUPRIYADI ANID SUPRIYADI Anid Supriyadi Anid Supriyadi Anid Supriyadi Anid Supriyadi ANNISA HUMAYRA DIRGANTARA Aprilestari, Nadia Ardhanareswari, Putu Diah ATAS PRACOYO Atas Pracoyo Aulani, Haniatul Azizah, Fitri Azizah, Hayatul Bakti, Lalu Arifin Aria Bambang Hariyanto Bawu, Mario Alfredo Budianto, M Bagus BUDIANTO, M. BAGUS Budianto, Muh Bagus Budianto, Muh. Bagus Desi Widianty Desi Widiyanti DEWANDHA MAS AGASTYA Dewandha Mas Agastya Dewandha Mas Agastya DHARMA S, BAGUS WIDHI DIANA PUSPITA DEWI Didi Supriyadi Agustawijaya Didik Agusta Wijaya Eko Pradjoko Eniarti, Miko Ery setiawan Ery Setiawan Ery Setiawan ERY SETIAWAN Faeruzza Athiya Farhan, Agil Fera Fitri Salsabila Firdaus FITRAH RIZAL DWIASMORO Hanesfa, Hafiz Rahman Hanifah, Lilik Hardiyanti, Ernita Hartana Hartana, Hartana Hasim Hasyim Hasyim Hasyim hasyim, hasyim Hendri Hermawan Heri Sulistiyono Heri Sulistiyono Heri Sulistiyono Heri Sulistiyono Heri Sulistiyono, Heri Heri Sulistyono Heri Sulistyono Hidayat, Syamsul Hijriati, Awwalus Sanatil I D G JAYA NEGARA I D G Jaya Negara I DEWA GEDE JAYA NEGARA I DEWA GEDE JAYA NEGARA I Dewa Gede Jaya Negara I Dewa Gede Jaya Negara I Dewa Gede Jaya Negara I DEWA GEDE JAYA NEGARA I DEWA GEDE JAYANEGARA I Dewa Gede Jayanegara I Dewa Jayanegara I Kade Wiratama I Wayan Suteja I WAYAN YASA I Wayan Yasa I Wayan Yasa I Wayan Yasa I Wayan Yasa I WAYAN YASA I Wayan Yasa, I Wayan I.D.G Jayanegara IAO Suwati Sideman Ida Ayu Oka Suwati Sideman Ida Ayu Sri Adnyani IDG Jaya Negara Imani, Nuansa Putty Irawan, Almira Ursula Irwan Irwan Isnaniar Jauhar - Fajrin Jauhar Fajrin, Jauhar Jaya Negara, I Dewa Gede JAYANEGARA, I DEWA GEDE Junaidin, Junaidin KAMTIKA, MIA JULIA Karyawan, Dewa Made Alit Karyawan, I Dewa Made Alit Kencana, Ida Bagus Adi KHAIRUDIN KHAIRUDIN Khalil, Lutfhi Riza Lalu Dwiki Axela Andriawan Lalu Wirahman Lalu Wirahman Wiradarma Lia Hidayaturrohmi Lilik - Hanifah Lilik Hanifah Lilik Hanifah LILIK HANIFAH Lilik Hanifah Lilik Hanifah Lilik Hanifah Lilik Hanifah Lilik Hanifah Lilik Hanifah M Bagus Budianto M Bagus Budianto M. BAGUS BUDIANTO M. BAGUS BUDIANTO Made Mahendra Mahendra, Made Merdana, I Nyoman Muh Bagus Budianto MUH BAGUS BUDIANTO Muh Bagus Budianto Muh Syahid MUH. BAGUS BUDIANTO Muh. Bagus Budianto Muh. Bagus Budianto Muh. Bagus Budianto Muhajirah Muhammad Bagus Budianto N. Nurchayati Natalia, Elya Natsir, Abdul NEGARA, I D G JAYA Negara, I Dewa Jaya Negara, IDG Jaya Niam, Siti Nur Dian Nufalia Hidayati Nugroho, Riko Salim Nur Chayati Nurrachman PRACOYO, ATAS Purwangsa, Herdi Putra, I Ketut Perdana Putra, IB Giri Putra, Rizki Pradana Qarina, Husnul RAI K W, I G AGUNG NGURAH Ratna Yuniarti Ratna Yuniarti Ratna Yuniati Rohani Rohani Rohani Rohani Rostihanji rosyadi, gusman Saiful Anwar Salehuddin Salehuddin Salehuddin Salehuddin, Salehuddin Salehudin Salehudin Salehudin Salehudin, Salehudin Salsabila, Fera Fitri Seniari, Ni Made Shofia Rawiana Shofia Rawiana Sideman, IAO Suwati Sofia - Rawiana Srikus Saptaningtyas, Rini Sulistyono, Heri Suparjo Suparjo Suparjo Supriadi, Anid SUPRIYADI, ANID Supriyatna Suyasa, I K Agus Teti Handayani Tri Rachmanto Tri Rachmanto Tri Rachmanto Veithzal Rivai Zainal Waiduri, Siti Zuhara Faradisa Wardana, I G A N K Widyasari, Ni Made Cahya Devi WIRADARMA, LALU WIRAHMAN WIRADHARMA, LALU WIRAHMAN Wirahman, Lalu Yuli Yani, Puji Rizki Yuniati, Ratna Yusron Saadi Zamharia, Martiana