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All Journal Jurnal Sains Materi Indonesia Indonesian Physical Review Kappa Journal
Adnyana, I Gusti Agung Putra
Physics Study Program, Faculty Of Mathematics And Natural Sciences, Udayana University, Badung, Bali, Indonesia
Astronomy Education Materials Science & Nanotechnology Physics Other

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Journal : Kappa Journal

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Analisa Konsentrasi Logam Cd Pada Rhizophora.Sp Menggunakan Metode AAS Di Kawasan Pelabuhan Gilimanuk Jembrana Bali Karel Yesaya Mbaba; Ida Bagus Made Suryatika; I Gusti Agung Putra Adnyana
Kappa Journal Vol 3 No 2 (2019): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v3i2.1639

Abstract

In this study, research was conducted on the analysis of Cu concentrations in mangrove plants (Rhizophora.sp) using the Atomic Absorbtion Spectrophotometry (AAS) method in the Gilimanuk Jembrana port area of Bali. The research was conducted on June 23, 2019 until July 28, 2019 in the Faculty of Mathematics and Natural Sciences, Udayana University. The method used is Atomic Absorption Spectrophotometry (AAS), a principle that is based on the process of absorption of energy by atoms that are at the level of basic energy (groundstate). The sample used is in the form of root stems and leaves of mangroves that are cleaned and destroyed in advance, because AAS can only analyze the material in the form of liquid. The results of the analysis with AAS are the Cd metal content at Gilimanuk port has exceeded the threshold of the quality standard that is in accordance with sea water quality standards according to Environmental Decree Number: KEP-MEN LH No.51 / Men KLH / 2004 Cd threshold for tourism marine is 0,002 ppm and for biota is 0,001 ppm, while mangrove is included in marine tourism with a threshold of 0,002 ppm.
Assessment of Tsunami Potential in Bali Using TOAST Modeling: Implications for Disaster Risk Reduction Nurmalasari, Ni Putu Yuni; Adnyana, I Gusti Agung Putra
Kappa Journal Vol 10 No 1 (2026): April (In Press)
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v10i1.32548

Abstract

This study aims to evaluate the tsunami hazard potential in the Bali region using multi-scenario numerical modeling to support disaster mitigation and early warning planning. Tsunami simulations were performed using the Tsunami Observation and Simulation Terminal (TOAST) with the EasyWave module. The model inputs were derived from the BMKG historical earthquake catalog and the 2017 Indonesian Seismic Hazard Map (PUSGEN), focusing on the Flores Back Arc Thrust segment north of Bali. Four earthquake magnitude scenarios (Mw 7.0, 7.2, 7.5, and 8.5) were simulated to estimate maximum wave heights and tsunami arrival times along the Bali coastline. The results indicate that nearly all coastal areas of Bali are vulnerable to tsunami impacts. In the worst-case scenario (Mw 8.5), maximum wave heights exceed 5 m in Sanur (Denpasar), Klungkung, and southern Karangasem, with short arrival times ranging from 5 to 22 minutes, corresponding to the highest warning level. Although moderate-magnitude scenarios (Mw 7.0–7.5) generate lower wave heights, tsunami arrival times remain rapid, indicating limited evacuation opportunities. These findings highlight the urgency of multi-scenario tsunami hazard assessment, enhancement of tsunami early warning systems, and improvement of evacuation preparedness to reduce tsunami risk in Bali.
Co-Authors Artawan, Nengah Husnul Hatimah Husnul Hatimah, Husnul I Gde Antha Kasmawan I Kadek Agus Sara Sawita I Nengah Sandi I Nyoman Gede Putra Wibawa I Putu Agum Suriajaya Maha Putra I Wayan Supardi Ida Bagus Alit Paramarta Ida Bagus Made Suryatika Ita Purnamaimun Jalut, Laura Laudensia Senly Kadek Ayu Rahmanuca Sabathiningsih Karel Yesaya Mbaba Komang Ngurah Suarbawa Laura Laudensia Senly Jalut Made Cingah Ni Luh Putu Trisnawati Ni Nyoman Rupiasih Ni Nyoman Susi Kesuma Wardani Nurmalasari, Ni Putu Yuni Purnamaimun, Ita Putu Ekayani Sri Tussniari Rosvita Hilbrida Sulastri Sukarasa, I Ketut Trisnawati, Ni Luh Putu Wardani, Ni Nyoman Susi Kesuma Widagda, I Gusti Agung Wisnu Ari Adi Wisnu Ari Adi Wisnu Ari Adi