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Ronald Darlly Hukubun

Universitas Pattimura

Author-ID : 3333089

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Preliminary modeling of tsunami potential in the Tanimbar Islands Ratuluhain, Eva Susan; Noya, Yunita Angnetjie; Kalay, Degen E.; Hukubun, Ronald Darlly
Nekton Vol 5 No 1 (2025): Nekton
Publisher : Politeknik Negeri Sambas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47767/nekton.v5i1.944

The Tanimbar Islands are an area of high tectonic activity and are part of the outer arc island chain formed by subduction in the Banda zone. The presence of the Sorong Fault and Tanimbar Fault around the Tanimbar Islands also affects the level of vulnerability to earthquakes and tsunami hazards. The purpose of this study was to predict the tsunami potential and affected area of the Tanimbar Islands. The method of analyzing the height data and predicting the affected area used COMCOT v1.7 software. Model simulations were performed on the domain layer by using linear equations. Earthquake and fault parameter data were obtained from the USGS website using historical earthquakes dated January 10, 2023. Bathymetry data were obtained from the GEBO website at a resolution of 15-arcsecond (464 m). The model simulation results show that the initial wave height value marked by the red contour is 0.22 m and the lowest low tide value marked by the blue contour is -0.4 m. Based on these results, the tsunami potential in the Tanimbar Islands is not dangerous, as the potentially affected areas in the study area are Selu Island, Woluaru Island, Wotap Island, and Molu Island, as well as the small islands in the western part. The simulation results demonstrate the importance of research related to tsunami hazards that may occur in the future so that appropriate mitigation can be planned for the existence of small islands around the Tanimbar Islands.

Pengaruh Substitusi Abu Bonggol Jagung sebagai Pozzolan pada Semen Portland Komposit terhadap Kuat Tekan Mortar Alif Nur Laili Rachmah; Ruliana, Binti; Sabrianah Badaruddin; Ratumanan , Ratih C F; Hukubun, Ronald Darlly
INSOLOGI: Jurnal Sains dan Teknologi Vol. 4 No. 4 (2025): Agustus 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v4i4.6142

The effect of additive corn cob ash (CA) on Portland Composite Cement (PCC) on the compressive strength of the mortar is influenced by pozzolan. The material that makes up pozzolan is silica. Corn cobs are agricultural waste that contains silica and every year continue to increase, so corn cob waste is as an additional material to Portland Composite Cement (PCC). This study was conducted to determine the compressive strength value of mortar using additive corn cob ash (CA) and corn cob ash that has been washed with HCl 2N (CA*) and the feasibility of these additives as a PCC-type cement mixture. The weight percentages of additives used were 5%, 10%, and 15%, and the duration of the mortar compressive strength test was 3, 7, and 28 days. The experimental results showed that the compressive strength (σm) was highest at the addition of 5% additives, the effect of additives on compressive strength resulted in σm research > standard σm (SNI). The results of the activation index analysis obtained additive corn cob ash of 76% and corn cob ash+HCl 2N of 76.71%, the value is above the minimum limit according to ASTM C.618-99 which is 75%.

Proses Ekstraksi Antioksidan dari Daun Kalanchoe pinnata: Studi Pengaruh Ukuran Partikel dan Kinetika Maserasi Sabrianah Badaruddin; Alif Nur Laili Rachmah; Ratih C F Ratumanan; Hukubun, Ronald Darlly; Tamaratritania Citta Trisnantari
INSOLOGI: Jurnal Sains dan Teknologi Vol. 4 No. 4 (2025): Agustus 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v4i4.6183

Kalanchoe pinnata leaves are rich in bioactive compounds, including flavonoids and phenolic constituents, which exhibit notable antioxidant properties. However, the efficiency of extraction processes is highly influenced by operational variables such as the type of physical pre-treatment and maceration duration. This study aims to evaluate the effect of three physical pre-treatment methods (manual grinding, chopping, and blending) and maceration periods ranging from 3 to 5 days on the antioxidant activity of K. pinnata leaf extracts using the DPPH radical scavenging assay. Results indicate that the grinding method combined with five days of maceration yields the highest antioxidant activity (95.04%), while blending leads to the lowest activity (81.78%), presumably due to heat-induced degradation of active compounds. Kinetic observations show that antioxidant activity tends to plateau on day five, particularly in ground samples. These findings highlight the critical influence of particle size reduction and solvent–solid contact time on mass transfer efficiency during extraction. This preliminary investigation provides a scientific basis for further research on the optimization of natural antioxidant extraction processes and the development of functional herbal formulations derived from K. pinnata leaves.

Seasonal Variability of Wind, Surface Current and Sea Surface Temperature in the Eastern Seram Waters During the 2015 Super El Nino Utama, Cipta; Tubalawony, Simon; Waas, Harold Joppie Davido; Hukubun, Ronald Darlly; Wattimena, Marlin Chrisye
Nekton Vol 5 No 2 (2025): Nekton
Publisher : Politeknik Negeri Sambas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47767/nekton.v5i2.1062

The eastern Seram waters are influenced by both the Seram Sea and the Banda Sea. This study aimed to examine variations in wind, surface currents, and sea surface temperature (SST) during 2015, coinciding with the super El Niño event. Data were obtained from the Group for High Resolution Sea Surface Temperature (GHRSST) and the Copernicus Marine Environment Monitoring Service (CMEMS). The results indicated that the monthly average wind speed in this area ranged from 0.01 to 8.98 m/s, with the lowest speed in November and the highest from January and June to September. Surface currents also exhibited seasonal variability, flowing from the Seram Sea to the Banda Sea during the west season (December–January) and reversing eastward in February. During the east season, Banda Sea water masses were supplied by Seram Sea water. Sea surface temperature decreased notably from June to August, with the lowest temperature recorded in August due to upwelling in the Banda and Arafura Seas. Surface currents formed eddies with warm water centers in the northern part of eastern Seram waters, and cold water centers (25,4 °C) were also observed. The convergence of these two water masses with distinct characteristics generated thermal fronts with temperature differences, resulting in strong temperature gradients from August to October as a consequence of upwelling and cooling induced by the intense El Niño at the end of 2015.

VARIABILITAS KLOROFIL-A DI PERAIRAN KEPULAUAN KEI, MALUKU TENGGARA Hukubun, Ronald Darlly; Tubalawony, Simon
Biofaal Journal Vol 5 No 1 (2024): Biofaal Journal
Publisher : Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/biofaal.v5i1pp034-043

Konsentrasi klorofil-a merupakan parameter yang dapat digunakan untuk pendugaan penyuburan perairan. Penelitian ini bertujuan mengkaji karakteristik konsentrasi klorofil-a secara temporal dan spasial di perairan Kepulauan Kei, pada periode Desember 2017 hingga November 2018. Data klorofil-a merupakan hasil perekaman Citra MODIS kemudian dianalisis pola sebaran dan dinamika yang terjadi di perairan. Fluktuasi konsentrasi klorofil-a secara umum menunjukkan pola musiman, sedangkan pola variabilitas konsentrasi klorofil-a antar musim memperlihatkan kandungan klorofil-a maksimum ditemukan pada musim timur sebesar 0,70 mg/m3, dan kandungan klorofil-a terendah terlihat pada musim barat sebesar 0,10 mg/m3. Variabilitas klorofil-a sangat dipengaruhi oleh curah hujan, angin, gelombang dan intensitas upwelling di perairan.

Rekonstruksi Tsunami Mentawai dengan Menggunakan COMCOT v1.7 Ratuluhain, Eva Susan; Noya, Yunita A.; Pradjoko, Eko; Rahman, Rahman; Hukubun, Ronald D.
Nekton Vol 2 No 2 (2022): October
Publisher : Politeknik Negeri Sambas

Many studies on the Mentawai tsunami have been carried out. Still, not many have reviewed the validation of run-up height compared to the results of field studies in the same year as the Mentawai tsunami on October 25, 2010. The survey of the Mentawai tsunami reconstruction using COMCOT v1.7 aims to validate The tsunami run-up height of the model output was compared with the results of the field study by the GITST Team in 2010. Validation of the model was carried out using the Aida parameter, by calculating the ratio of the comparison between the model output and the field study results. The study location of the model is divided into 3 layers, namely layer01 covering Sipora Island, North Pagai Island, and South Pagai Island, layer02 covering North Pagai Island and South Pagai Island, and layer03 with the focus of observation on Sibigau Island, with bathymetric resolution used for each layer. 464 m, 232 m, and 77 m so that the propagation at the observation site can be seen clearly. The height of the modeled tsunami ranged from 2.5 – 11.2 meters, with a maximum run-up height observed on Sibigau Island of 11.2 meters, and the time range for the tsunami arriving on land was 5 – 15 minutes. The comparison ratio between the model results and the field study is K = 0.9 and k (standard deviation) = 0.16. Based on the comparison ratio, the model output is close to the actual result.

PENDIDIKAN MITIGASI BENCANA GEMPA BUMI KEPADA SISWA KATEKISASI DI SEKTOR CALVARY JEMAAT GPM REHOBOTH Huwae, Laury Marcia Chara; Hukubun, Ronald Darlly; Hukubun, Wiwien Gaby
PAKEM : Jurnal Pengabdian Kepada Masyarakat Vol 2 No 1 (2022): Pakem : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Pattimura

Disaster mitigation is an effort that can be done to prevent casualties and minimize losses, this is in line with the condition of Maluku which is prone to earthquakes. This PKM aims to provide knowledge and understanding of earthquake disaster mitigation. The service method is presented in the form of providing material, discussion and evaluation. It is hoped that the targeted catechism students (partners) can become “agents of change” in sharing information and knowledge with the general public about the importance of disaster emergency preparedness

PENERAPAN TERUMBU BUATAN (Aritificial Reef) DI PERAIRAN DESA RUTONG DALAM UPAYA REHABILITASI EKOSISITEM TERUMBU KARANG DAN PENINGKATAN USAHA PENANGKAPAN Hukubun, Ronald Darlly; Rijoly, Frederik; Lokollo, Frijona F
PAKEM : Jurnal Pengabdian Kepada Masyarakat Vol 2 No 2 (2022): Pakem : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/pakem.2.2.83-89

Application of artificial reefs in the waters of the Village Rutong is very well in supporting the rehabilitation of coral reefs that have been under pressure especially for reef fish resources. Methods used in these activities is the application of methods Ipteks Education through the delivery of material through the method of information about activities of the rehabilitation efforts of coral reef ecosystems to the target audience of the follow through artificial reef technology, and the training method is through the implementation of the manufacturing activities of coral artificial, haunted, and raft. Making the basic material of artificial reefs is a used car tires tied to form a triangle tires. Monitoring activities carried out 2 months after the splashdown in various types of fish that have used loopholes and surface car tires as well as a shelter looking for food. This continued to be held as ecological processes that will occur so that the initial function of artificial reefs that will serve as a fish nestt; and can be rehabilitated reef ecosystems that have been damaged will be realized

Mitigasi Bencana Tsunami Bagi Siswa SD Negeri 1 Latuhalat Lawalata, Felix Fernando; Meilanny Cornelis; Velicia Ivena Hutubessy; Bireinda Tirza Violetta Tuapattinaya; Ronald Darlly Hukubun
ABDIKAN: Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Vol. 1 No. 2 (2022): Mei 2022
Publisher : Yayasan Literasi Sains Indonesia

Disaster mitigation is an effort to minimize physical and material losses in the event of a disaster. This activity aims to provide insight and knowledge for early childhood about tsunami disaster mitigation. The method of service is by providing material on tsunami disaster mitigation with the hope that the participants who are students of SD Negeri 1 Latuhalat can apply what has been explained when the disaster occurs in order to minimize the loss of life.

Pengenalan Ekosistem Terumbu Karang Terhadap Amgpm Cabang Elim 1 – Amahusu Ambon Aneila Stephanie Russel; Josepina Inggriany Untailawan; Nur Andini; Lukman Hamsah Djari; Ronald Darlly Hukubun
ABDIKAN: Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Vol. 1 No. 2 (2022): Mei 2022
Publisher : Yayasan Literasi Sains Indonesia

The coral reef ecosystem in Amahusu village has been damaged, resulting in reduced production of fisheries and other animal products. This damage is continuously caused by natural and unnatural factors, so that it can disrupt the economy of fishing communities who depend on marine products for their daily lives. The purpose of this activity is to equip the Maluku Protestant Church Youth Troops (AMGPM) Nusaniwe sub- district, the basics of coral conservation through coral reef restoration activities. Coral transplantation is a method of restoring the condition of coral reefs to restore and restore the natural ecosystem of coral reefs. The methods include: introduction of coral transplantation, preparation and process of coral transplantation. The introduction of coral biota is the most basic thing that the public must know in order to understand the potential and role of corals in the coral reef ecosystem. In addition, the community is gradually being taught how to use the correct transplant method, hopefully in the future they will be independent and able to do it themselves. Coral transplantation is one method of coral reef restoration in Amahusu Village. This presentation is a deep understanding of the community that with significant assistance they are expected to be independent in protecting coral reefs.

Co-Authors Abdi Pangestu Abdul Norman Kibas Adhe Fitri Rohly Elys Agnes A. Panggabean Aidah Z. N. Rohmah Albert F. Thomas Aldeva H. F Mawuntu Aldi Renata Alessandra F. Saija Alessandra F. Saija Alfian Fayus Shafar Ambo Alia U. Mahua Alif Nur Laili Rachmah Alvind G. Kambuno Amey Makahity Ami Indah Marasabessy Anansya Theresya Lekatompessy Anastasya Supusepa Aneila Stephanie Russel Angela Ruban Angela Ruban Aprilia Tuasuun Astry Tehuayo Atmisari Diman Audry Leiwakabessy Badaruddin, Sabrianah Bireinda Tirza Violetta Tuapattinaya Brian Saputra Manurung Charlota Masully Chindy Claudia Ririhena Chrisnata Manihuruk Christiana Manuella Violynn Clifford R. Kundiman Degen E. Kalay Degen E. Kalay Degen Erasmus Kalay Delce Kainama Dhea Nurafni Firmansyah Donal Noija Eko Pradjoko Elsy Taruk Linggi Emilia Hanubun Esra Yudha Empra Eva Kaimudin Eva S. Ratuluhain Eva Susan Ratuluhain Evanthely N. Ch. M. Tahalele Fadila F F Farhana Umhaera Patty Fatima Kubais Febiyanty Palijama Feronika Pulamajen Fileo Agus Waileruny Fira A. Rehalat Friesland Tuapetel Frijona Fabiola Lokollo Fuadiska Salamena Gian Rumahlatu Gladys R. Pamesti Glaselaria A. Oeijano Gloria A. D. Rante Gloria M Souissa Gloria Sapulette Gloria Sitaniapessy Godwin W. A. Hehanussa Goziana Armagita Grace Pattiselanno Gratia D. Manuputty Gresia Maiseka Gresti Vionae Grisko V. Pattippeilohy Harold J.D. Waas Hehanussa, Kedswin Gerson Hektor Dalton Hehanussa Helmalya Putri Hendra Titawael Hendrikus Sakliressy Hensly Tahalea Hermanto Romera Hiariey, Johanis Hubert A. Mainake Hukubun, Wiwien Gaby Hulopi, Mahriyana Imanuel Villian Trayanta Soukotta Indra Wati Niapele Indriyanti Kendy Inri Chartini Johansz Intan Buton Ivanmorl Ruspanah Ivanmorl Ruspanah Ivanual M. Wairata Jembris Nustelu Joel Apriyanto Fejacreyo Huka Joel K. Cols Cols Johan B. Bension Johan Bruiyf Bension Jolanda Tomasouw Jorgi B. Kurniawan Josepina Inggriany Untailawan Joshua Amstrong Leuwol Jossep Titirloloby Josua Frans Trianto Joy Gaspersz Juan Marchel Paulus Jugerteria Luhulima Juliaans E. R. Marantika Jusuf Leiwakabessy Kalay, Degen E Kalay, Degen E. Karan Silaratubun Kelvin Sopahaluwakan Kereison D. Saija Kesia L. Sahusilawane Kezia Cornelia Klau Kezia Sovici Tuhuleruw Krisnawati Maahury Krisye Pasanea Kuntum N. Lisaholet Labibah Nur Dini Laura B. S. Huwae Laura Bianca Silvia Huwae Laura Bianca Sylvia Huwae LAURY CHARA HUWAE Lawalata, Felix Fernando Lenci Patty, Kristi Lina S. Berlianti Linansera, Valentine Lukman Hamsah Djari Lunmisay, Jelian Lusanra Jacqueline Tutkey M. Aldi Septian M. Fajar Alfikar Marcia Lainsamputty Marlin C. Wattimena Marlin Chrisye Wattimena Marsel Marthin Nikijuluw Masnia Masnia Masrikat, Julius A. N. Maya Lisa Haupea Megumi I. P. Malle Meilanny Cornelis Merlin Getdha Putnarubun Michele C. Manuputty Michele F. C. Usmany Michele Kesaulya Moniharapon, Louis D Murad Madi Mutia F. Tala N. Satumalay, Vilsigelint Natalia Tetelepta Novisty Mainake Noya, Yunita A. Noya, Yunita Angnetjie Nur Andini Pentury, Kresyan Poppy S Manila Pormes, Ludwina Pretty Mitra Kristina Zebua Prezto S. A. Dabutar Putri Azzuhra N. Pattisahusiwa Rahman Rahman Rahman Rahman Ratih C F Ratumanan Ratih C. F. Ratumanan Ratuluhain, Eva Susan Ratumanan , Ratih C F Refaldy Siahaya Regina Latuheru Retraubun, Alex S W Retraubun, Alex S. W Revi A. Rumbawa Rijoly, Frederik Rina S. D. Suganda Riski A. K. Rumata Riskiya Riskiya Ruben Mesasnuat Ruliana, Binti Rumasoreng Rumasoreng S. Tentua, Caroline Safitriyani Safitriyani Saleky, Valentine D Salma Rumau Sanduan, Fitria Sherly Lewerissa Shinta Syaranamual Siahainenia, Laura Silahooy, Veince B. Simon Tubalawony Siti R. Sehwaky Siti Rukmana Wally Siti S. Rumonin Sitti Aisa Mahu Sophia N. M. Fendjalang Sri J. A. Bandu Srihayu Umasangaji Stefanno M. A. Rijoly Stefano M. A. Rijoly Stela Salamor Suranti Pratiwi Suryani Makassar Syalvira N. Nasaruddin Tomasoa, Matheos Trisna Marsadi Trisnantari, Tamaratritania Citta Tualeka, Oki Nurul Asma Utama, Cipta Valentine D. Saleky Valentine D. Saleky Velicia Ivena Hutubessy Vica Jillyan Edsti Saija Vicko Lamidja Vivin Ayuasthika Waas, Harold J.D Waas, Harold Joppie Davido Wakano, Deli Warnesy A Samangun Wattimena, Marlin Ch WATTIMURY, JUSUPH J Wenseslaus Rurum Yansen Jagatri Kufla Yayan Asmawan Yemima H. Von Bulow Yoisye Lopulalan Yulius Ruspanah Zusye Latuihamallo

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