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All Journal Agromet Jurnal Teknologi Reaktor Nuklir Tri Dasa Mega JFA (Jurnal Fisika dan Aplikasinya) EnviroScienteae Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Sainstek : Jurnal Sains dan Teknologi Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Pillar of Physics: Jurnal Berkala Ilmiah Fisika Journal of Climate Change Society

Nofi Yendri Sudiar

Department of Physics, Universitas Negeri Padang

Author-ID : 6344260

Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Social Sciences Other

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MODEL PEMBANGKIT DATA CURAH HUJAN: STUDI KASUS STASIUN SIMPANG ALAI KOTA PADANG Sudiar, Nofi Yendri
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 2 (2015)
Publisher : IAIN Batusangkar

The effort on constructing weather data generator to cope with the scarcity of daily rainfall data is becoming essential recently. The objective of the paper is to generate rainfall daily data using stochastic spreadsheet. This technique can generate random values derived from the Gamma distribution which is initiated by the determination of rainfall probabilities, the occurrences on certain days and followed by the generation of rainfall height. The result showed that the rainfall data generator in Padang at period 1976-2005 showed consistent patterns with the observation eventhough simulation on day 180th the value is too high. Based on T-paired test, it showed no statistically significant different between simulation and observation (P-Value=0.000). Thus, the model can be employed as daily rainfall generator that can be further used to support the sustanaibility of agricultural activitiesin and food security in Padang. Key words: the scarcity, Gamma distribution, food security

SIMULASI MODEL HBV PADA DAERAH ALIRAN SUNGAI BATANG ARAU PADANG Sudiar, Nofi Yendri
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 1 (2015)
Publisher : IAIN Batusangkar

The objective of the study was to apply and to test the HBV subtropical model into a tropical region Batang Arau watershed Padang. Batang Arau watershed, located in Padang, covers an area of 106 km2. The HBV model was manually calibrated by trial adjustment of each parameter to obtain the appropriate physical characteristics of Batang Arau watershed. The study shows that the correlation coefficient of 0.48 and the value of NSE at 0.58. The value indicates the HBV modeling included in the category of accuracy being and indicated that HBV built models can not simulate the discharge of DAS Batang Arau quite well and can not be used to represent the real situation in DAS Batang Arau Padang. Although DAS Batang Padang Harau included in a small basin, but the model of HBV have not been able to describe the phenomenon that is properly due to the diversity of topography.Key words: Model HBV hydrology, watershed Batang Arau, the diversity of topography

PEMODELAN INVERSI DATA GEOLISTRIK 1-D UNTUK MENENTUKAN JENIS DAN KEDALAMAN BATUAN DASAR Sudiar, Nofi Yendri; Akmam, Akmam
Sainstek : Jurnal Sains dan Teknologi Vol 5, No 1 (2013)
Publisher : IAIN Batusangkar

Large earthquakes that occurred in the city of Padang had been expected to lead to changes in the structure of rocks beneath the surface composition including bedrock. Information about the composition of these rocks can be obtained by conducting geological surveys by using geoelectric methods (resistivity). This method is very good to know the condition or subsurface geological structures based on variations in resistivity. Research is inversion modeling. Equation used is forward modeling of resistivity 1-D using Jacobi matrix element finite difference approach. The data used are secondary data obtained from a previous study by the Department of Physics geoelectric exploration team of UNP. Resistivity is determined from an apparent resistivity measurements. Types are resistivity investigation using Vertical Electrical Sounding (VES) or depth investigation, with distinction anisotropic cross section in the vertical direction. The data inversion modeling results resistivity 1-D using IPI2WIN software obtained bedrock on the track of FE to FIS at the point of sounding 2/7 at depths > 18.3 m the resistivity is 1002 Wm, on track of UNP gate to FT at the point of sounding 2/7 at depths > 25.6 m the resistivity is 744 Wm and at the point of sounding 5/7 on the surface to a depth of 3.75 m the resistivity is 778 Wm and on track of Balai Bahasa to Al Azhar mosque at the point of sounding 7/7 at a depth of > 11.4 m the resistivity is 923 Wm. While on the track of FIK to Lab. Biology is not found bedrock. Bedrock types found are suspected Andesite which form the basis for the layer above it as Alluvium and Sands, Sandstones and Clays. Modeling results are not so good, as evidenced by the error (RMS error) more than 5%, which means the calculation data does not approach the observations data. This is due to the amount of noise during measurement that sourced from the equipment used and the environmental conditions such as there are many trees, electrical wires and the route is paved.Key words: resistivity method, modeling, inversion, VES

ANALISIS PERIODE ULANG BANJIR DI KOTA PADANG MENGGUNAKAN CARA IWAI DAN KAITANNYA DENGAN MJO (MADDEN JULIAN OSCILLATION) Sudiar, Nofi Yendri
Sainstek : Jurnal Sains dan Teknologi Vol 5, No 2 (2013)
Publisher : IAIN Batusangkar

The research has conducted for the analysis of return period of flood over Padang using Iwai?s method. Iwai?s method is a statistical based method to look for a normal distribution. Daily rainfall data observed at seven stations observations were made over the period of analysis to figure out the pattern, then seen his relationship with the MJO. The results of the research obtained monthly rainfall distribution pattern over Padang show equatorial type that has two peaks of rainfall in a year are March and April as the first peak while the second peak in November. Return period rainfall for the 60 days over Padang is 88 mm and is 78 mm in 30 days. Incidence of flooding over Padang in 2000-2010 have a strong relationship with the entry of the MJO phases 3 and 4, is shown from the flood events of 2001, 2002, 2003, 2004, 2006, 2007 and 2009 with a rainfall intensity approaching the calculation of return period 30 - 60 days is 78-88 mm.Key words: Iwai?s Method, return period, flood

ANALISIS CURAH HUJAN KOTA PADANG SAAT MADDEN JULIAN OSCILLATION PERIODE 1980-2010 Sudiar, Nofi Yendri; Siregar, Plato M.
Sainstek : Jurnal Sains dan Teknologi Vol 4, No 2 (2012)
Publisher : IAIN Batusangkar

Madden Julian Oscillation (MJO) is a phenomenon that affects the activity patterns of convective clouds and rainfall, thus this study has the objective to analyze the characteristics of the MJO with increased rainfall due to convective activity over Padang. Daily rainfall data observed in seven observation stations analizing wavelet power spectrum to determine the pattern of rainfall in the region, further correlation it with the MJO. Important results obtained based on rainfall data is Padang has equatorial pattern. Correlation between the results obtained with the strong MJO rainfall is -0.54 to -0.687 in phase 3 and phase 4 is -0.564 to -0.69 with a confidence level of 90% -95%. These results indicate that strong MJO events in phase 3 and 4 do not directly affect the increase in precipitation, due to the phase difference and the lag at seven observation stations over Padang. Physically, out of phase and lag means that any strong MJO enters Padang occurs cloud growth process and after the strong MJO exit this area then who have formed the clouds turned into rain. For the above normal category, excess rainfall while strong MJO phase 3 is the observation station Simpang Alai and Tabing respectively 122% and 120%, as well as strong MJO phase 4 is the observation station of Gunung Sariak, Kasang, Gunung Nago, Batu Busuk and Ladang Padi sequential 118%, 116%, 123%, 119% and 117%. Keywords: MJO, rainfall, wavelet

Climate Comfort in Nature-Based Tourism at Tropical Region Nofi Yendri Sudiar; Yonny Koesmaryono; . Perdinan; Hadi Susilo Arifin
Agromet Vol. 33 No. 2 (2019): DECEMBER 2019
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

This research reveals visitor perceptions of climate comfort in nature-based tourism areas in Indonesia. We combined a survey and modeling to calculate the comfort score based on Tourism Climate Index (TCI) and Holiday Climate Index (HCI) in three tourism sites of Ecopark Ancol, Bogor Botanical Garden, and Cibodas Botanical Garden. During the survey, we collected data on climate comfort perceptions and the role of the weather on the comfort. Totally, 793 respondents of tourism visitors participated in the study. Our results showed that almost all of visitors (>95%) stated that the weather affected the climate comfort. Interestingly, the weather condition did not influence on the decisions where the tourism site to visit. The level of perceived climate comfort for the sites were neutral (Ecopark, 57.3%), and comfortable (Bogor Botanical Garden, 60%; Cibodas Botanical Garden, 78.4%). Then by modeling we obtained the best method to calculate the comfort based on the following index: (i) TCI with Physiological Equivalent Temperature (PET) Tianjin for Ecopark (57.2), (ii) HCI for Bogor Botanical Garden (59), and (iii) HCI with PET Tianjin for Cibodas Botanical Garden (77.6). Further, perception on climate comfort was significantly difference among sex, age, and education level of the visitors. In warmer environmental condition, the older people and women feel more comfortable. Our finding revealed that topography was weak correlated with comfort perception. By understanding visitor perceptions, strategies and appropriate actions can be developed to increase comfort in the nature-based tourism industry.

Penerapan metode geolistrik tahanan jenis konfigurasi wenner untuk menentukan penyebaran lindi di Tempat Pemprosesan Akhir (TPA) sampah Air Dingin Kota Padang (The application of the wenner configuration resistivity geoelectric method to determine the distribution of leachate in the final waste processing in Air Dingin Padang City) Yori Deswita; Nofi Yendri Sudiar; Fatni Mufit; - Akmam
PILLAR OF PHYSICS Vol 5 (2015)
Publisher : Department of Physics – Universitas Negeri Padang UNP

TPA Air Dingin are landfills located in Padang and positioned near the inhabitant area. The accumulationof waste at TPA Air Dingin can cause environment pollution. The aimed of this research is to determine the resistivity and the spread of leachate in TPA Air Dingin. Estimation of the distribution of leachate below the ground surface use a Resistivity Geoelectrical method with Wenner Configuration. Data were collected by ARES Multielectrode in 3 lines. The data were interpreted using Robust inversion to obtain a 2D model of earth’s surface that consists of depth and resistivity value. The result of this research showed that the kinds of rocks in this area consist of Groundwater, Clay, Sandstone and Andesite. Direction of spread of leachate on the measurements, the distribution of leachate moving from the southeast towards the Northwest

Identifikasi bidang gelincir menggunakan metode geolistrik tahanan jenis konfigurasi Schlumberger di Bukit Lantiak Kecamatan Padang Selatan (The identification of the slip surface using the geoelectric resistivity method of the Schlumberger configuration in Bukit Lantiak, Padang Selatan District) Irepia Refa Dona; - Akmam; Nofi Yendri Sudiar
PILLAR OF PHYSICS Vol 5 (2015)
Publisher : Department of Physics – Universitas Negeri Padang UNP

The identification of slip surface in Bukit Lantiak Padang Selatan has been done. The aim of this research is to know the shape of slip surface, depth of slip surface, and angle of slip surface. Data were collected by Automatic Resistivity Multielectrode in 4 lines with Schlumberger configuration. Interpreted of data was done with Robust Constraint Inversion. The result of this research shows that slip surface is Translation slip. Depth of slip surface are 12,8 m and 4,5 m. Angles of slip surface are 34,980 and 25,940.

Pelatihan Kesiapsiagaan Menghadapi Bencana untuk Masyarakat yang Berada Di ‘’Seismic Gap’’ Desa Muara Siberut Pakhrur Razi; Yohandri Yohandri; Nofi Yendri Sudiar; ifdil ifdil; Thamrin Thamrin; Asrizal Asrizal
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 22, No 1 (2022): Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/sb.02460

Tingginya potensi bencana di daerah seismic gap di kepulauan mentawai telah menjadi perhatian yang serius baik pemerintah pusat maupun daerah. Selain potensi gempa bumi daerah ini juga memiliki potensi diterjang tsunami jika gempa besar terjadi serta banjir. Oleh karena itu perlu dilakukan pelatihan berkelanjutan kepada masyarakat serta mengukur tingkat kesiapsiagaan mereka dalam menghadapi bencana. Program pelatihan ini merupakan bagian dari kegiatan untuk menciptakan desa/nagai tangguh bencana berdasarkan standar SNI desa tangguh necana dan Sendai framework disaster reduction. Selain peningkatan pengetahuan masyarakat tentang potensi bencana di seismic gap kepulauan mentawai, juga dilakukan pelatihan serta pengukuran tingkat kesiapsiagaan masyarakat terhadap bencana. Berdasarkan hasil survey yang laksanakan setelah dilakukan pelatihan, menunjukkan bahwa tingkat kesiapan Individu/keluarga terhadap kesiapsiagaan dalam menghadapi bencana berada pada level utama dengan skor >50.

KARAKTERISTIK DAN KENYAMANAN IKLIM LOKASI WISATA BERBASIS ALAM DI ECO-PARK ANCOL, KEBUN RAYA BOGOR DAN KEBUN RAYA CIBODAS Nofi Yendri Sudiar; Yonny Koesmaryono; Perdinan Perdinan; Hadi Susilo Arifin
EnviroScienteae Vol 15, No 2 (2019): EnviroScienteae Volume 15 Nomor 2, Agustus 2019
Publisher : Universitas Lambung Mangkurat

This research explores the characteristics and comfort of climate in nature-based tourism areas in Ancol Eco-Park (EPA) (3masl), Bogor Botanical Gardens (KRB)(260 masl) and Cibodas Botanical Gardens (KRC) (1340 masl). Climate characteristics use the Schmidt-Ferguson and Koppen classifications. Calculation of climate comfort scores using TCI and HCI methods and modifying the thermal aspects. In addition to surveys with questionnaires, measurements of temperature, humidity and wind speed were carried out in all three regions simultaneously. Climate classification according to Schmidt-Ferguson obtained by KRB is type A climate, EPA and KRC are type C climate. Classification according to Koppen, the three regions include the climate of the tropical rainforest namely EPA (Am), KRB and KRC (Af). The vegetation component dominates the three tourist areas with a percentage of over 60% of the tourist areas. The climate comfort index based on calculations results in a comfortable KRC area throughout the year while EPA and KRB are comfortable in the dry season. Comparison of comfort index based on calculations with visitor perceptions results in thermal aspects for the tropics needing to be modified. From 12:00-12:59 WIB to 13:00-13:59 WIB, the most uncomfortable hours of the day. Temperature intervals with comfortable categories are 25.2°C - 29.0°C or effective temperatures between 20.5°C - 24.6°C.

Co-Authors - Hamdi - Yulkifli Ahmad Fauzi Aisyah Apriani Parinduri Akmam Akmam Akmam Akmam Asrizal Asrizal Asrizal Azmi Renaldi Renaldi Alrahmadana Fatni Mufit Gautama, Mohammad Isa Hadi Susilo Arifin Hamdi Hamdi Hamdi Hamdi Rifai Ifdil Ifdil Irepia Refa Dona Irfan Muhammad Zaqi Letmi Dwiridal Muhammad Reza Maulana Aliva Pakhrur Razi Plato M. Siregar Randy Sadinda Tsania Suhada Syafriani Syafriani Thamrin Yohandri Yonny Koesmaryono Yonny Koesmaryono Yori Deswita

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