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Journal : Natural B

Determination of Internal Structure of Semeru Volcano Based on Seismic Attenuation Imagery Hena Dian Ayu; Adi Susilo; Sukir Maryanto; Muhamad Hendrasto
Natural B, Journal of Health and Environmental Sciences Vol 2, No 2 (2013)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1429.936 KB) | DOI: 10.21776/ub.natural-b.2013.002.02.8

Abstract

Characteristic of medium could be defined by physical parameters such as seismic velocity and attenuation. Amplitude, hyocentral distance, frequency and attenuation coefficient is required to determine the Q-factor value  or attenuation in effort on imaging the internal structure. In this study, we used volcanic earthquakes data of Semeru Volcano recorded 2009 that consist 54 seismogram (24 A-type volcanic earthquakes and 24 explosion volcanic earthquakes. The Q-factor value of A-type volcanic earthquakes is 4 - 392 or about 78,87 and the Q-factor value of explosion volcanic earthquakes is 4 - 288 or about 51,39. In term of the image quality, it can be seen that the attenuation on Jongring Seloko active caldera and under Jongring Seloko have low attenuation value or high Q-factor value thas was called the zone beneath. The zone beneath is interpreted to associated with hot material that may indicate the magma chamber that  concentrated in the depth interval of 1-1,8 km from the top of Semeru Volcano. The zone beneath have structural trends on West-East-Southeastern-South sector out the volcano. The internal structure of Semeru Volcano is predominance of sedimentary rocks, sandstone and rocks with gas in pore space. Although in some deep layer have internal structure as metamorphic rocks and igneous rock.
Co-Authors Adi Susilo Agnesta Yesika Ardelina Agus Budiyono Agus Budiyono Akhmad Afandi Akhmad Jufriadi Alfiana, Rinda Alfianda, Faurisha Vega Alvina Barikhlana Anggri Sartika Wiguna Anggri Sartika Wiguna Aprianti, Yesi Dian Arfianto, Fajar Dwi Ayu Nur Laily Choiroh Budaeng, Jumaidin Chandra Sundaygara Choirul Huda Choirul Huda Cholisina Anik Perwita Chusniyah, Dina Asmaul Cicilia Ika Rahayu Nita Conidia Ristiastuti Jehanus Damayanti, Infa Daniar Pangastiningasih Etikamurni Dwi Wahyuningsih, Dwi Endarko Endarko Etikamurni, Daniar Etikamurni, Daniar Pangastiningasih Fajriyah, Mujtahidatul Ilmi Farida Nur Kumala Fathiah Alatas Fitriatus Sabrina Hari Budianto Henni Anggraini Hestiningtyas Y. Pratiwi Hestiningtyas Yuli Pratiwi Ika Karlina Laila Nur Suciningtyas Intan Permatasari Ayunda Rasuli Istyowati, Anik Jaya, Paskalina Kristiyaningsih, Else Kumalasari, Tutut Kurniawati, Mega Putri Kurriawan Budi Pranata Kurriawan Budi Pranata, Kurriawan Budi Kusumawati, Astrini Dewi Lukitawanti, Sartika Dewi M Rahman Mokhammad Ikhsan Muhibudi Muhamad Hendrasto Muhammad Nur Hudha Muhardjito Muhardjito Mujtahidatul Ilmi Fajriyah Muthmainnah, Melania Suweni Muntini Ndawis, Yustri Nur Rohmah Utami Nur Shabrina Safitri Nurilyasari, Dita Fitrin Nurul Ain Ogi Danika Pranata Paskalina Jaya Perwita, Cholisina Anik Petronela Agata Moong Prameswari, Intan Prastiyan, Rahmad Prawira, Cholisina Anik Purwanti, Putri Festiana Putri Festiana Purwanti Putri, Amelia Nurdevianti Raehanayati Raehanayati Rahmad Prastiyan Rasuli, Intan Permatasari Ayunda Ratri Andinisari Riski Endah Setyawati Rismawati, Astri Yuni Rosita, Mila Rosyidah, Firda Ulya Nur SABRINA, FITRIATUS Safitri, Nur Shabrina Sagita, Ulfa Sandy Vikki Ariyanto Sarwanto Sarwanto Sentot Kusairi Serap, Maria Sulastri Anut Sholikhan Siti Farhatus Tsaniyah Solihah, Hilwa Mar’atus Solikhan Solikhan Sri Mulyani Sri Wilujeng Sudi Dul Aji Sukir Maryanto Sulistyo Lestari Sulistyo Saputro Sunaryono Sunaryono, Sunaryono Sundaygara, Chandra Sutopo Sutopo Utama , Dana Marsetiya Wahyuningtyas, Astri Wignyo Winarko Wignyo Winarko Winarko, Wignyo Winda Agustina Rahayu Wiwin Indriani Ina Wulandari, Elvina Tri Zuhannisa’, Shofitri