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All Journal JOURNAL ONLINE OF PHYSICS Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI Journal on Education Eksakta : Berkala Ilmiah Bidang MIPA Kappa Journal Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Journal of Experimental and Applied Physics
Zulhendra Zulhendra
Universitas Negeri Padang
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Analisis Tingkat Kenyamanan Iklim dan Termal Berdasarkan Metode Tourism Climate Index (TCI) di Kawasan Wisata Bukittinggi Rahmadhani, Annisa; Sudiar, Nofi Yendri; Hamdi, Hamdi; Zulhendra, Zulhendra
Jurnal Pendidikan Tambusai Vol. 8 No. 3 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Terjadi peningkatan kunjungan wisatawan ke kota Bukittinggi yaitu lebih dari satu juta kunjungan selama tahun 2023. Penelitian ini bertujuan untuk mengetahui tingkat kenyamanan iklim dan termal wisatawan serta mengetahui waktu optimal untuk berkunjung dengan menggunakan metode TCI. Metode TCI mengukur kenyamanan wisatawan berdasarkan parameter iklim seperti suhu, kelembaban, curah hujan, penyinaran matahari dan kecepatan angin. Data iklim diperoleh dari stasiun GAW Bukit Kototabang selama periode 2013 – 2020. Data primer dikumpulkan melalui survei wisatawan yang dilakukan di lokasi jam gadang dan panorama. Hasil penelitian menunjukkan bahwa tingkat kenyamanan bervariasi sepanjang tahun, nilai TCI tertinggi terjadi pada bulan Juni dan Juli. Waktu kunjungan optimal di jam gadang terjadi pada pukul 07.00-08.00 pagi dan pukul 17.00-18.00 sore. Sedangkan pada panorama pada pukul 08.00-11.00 pagi dan pada pukul 16.00-18.00 sore. Terjadi perbedaan persepsi kenyamanan termal antara hasil survei dengan teori yang disebabkan oleh beberapa faktor seperti faktor lingkungan, albedo permukaan dan sensitivitas kulit manusia.
Implementation of the Gauss-Kronrod Quadrature Method (G7, K15) on 2D Gravity Anomaly Modeling in Basins with a Polynomial Variation of Density Distribution with Depth Zulhendra; Srigutomo, Wahyu; Hapsoro, Cahyo Aji
Jurnal Penelitian Pendidikan IPA Vol 10 No 8 (2024): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i8.8493

Abstract

Forward modeling of 2D gravity anomalies, considering density contrasts that vary polynomially with depth, was performed to examine basin structures. This process involved two main stages: deriving analytical formulas and executing numerical integration. The Gauss-Kronrod Quadrature Method, utilizing 7 Gauss points and 15 Kronrod points, was employed to precisely compute these integrals. Initial modeling applied to theoretical basement scenarios with fixed density contrasts showed gravity anomalies that accurately reflected the curvature of the basement. To validate the approach, it was then applied to real-world cases including the Sebastian Vizcaino Basin, San Jacinto Graben, and Sayula Basin. By incorporating suitable density contrasts, modeling lengths, and basement curvature shapes, the results revealed that both fixed-density and depth-variable density models produced gravity anomalies with patterns consistent with the actual basement curvature. These findings validate the modeling technique’s effectiveness in representing real geological features accurately. The study confirms that the Gauss-Kronrod Quadrature Method (G7, K15) is robust for analyzing 2D gravity anomalies, providing a reliable tool for understanding the influence of varying density contrasts on gravity responses.
Co-Authors AA Sudharmawan, AA Althaf, Muhammad Mahdy Aprimanda Mulya Rizki, Rifa Bahri, Aliefa Zunaida Debi Rianto Denandra, Alza Fadila, Husnul Fandi Oktasendra Fauzi Ahmad Muda Florentina Simalango, Nora Hamdi Hamdi Handayani, Silvia Sri Hapsoro, Cahyo Aji Harman Amir Intan Purnama Yani Janna, Anisa Khairunnissa, Shafira Letmi Dwiridal Mairizwan Mairizwan Nofi Yendri Sudiar Pakhrur Razi Rahmadhani, Annisa Resi Silvianis Rio Anshari Riyasni, Selma Salsabila, Salsabila Saqilah, Alya Syafriani Syafriani Syafriani, Syafriani Wahyu Srigutomo Widia Kemala Sari Yendri Sudiar, Nofi Zatil Ismah, Amirah Zikri, Ahmad Raihan zu, Zurahma