Constraints on building susceptibility zone from tephra-lapilli loading through isopach mapping: A case study of the Quaternary ( 1.1 ka ), VEI 3–4 eruptions of Sumbing volcano, Central Java, Indonesia

Indranova Suhendro (), Sonna Diwijaya, Zulfa Yogi Rahmawati, Pandu Eka Priyana, Revina Fitri Zen, Andre Jonathan, Muhamamad Alsamtu Tita Sabila Pratama Suhartono, Gammanda Adhny El Zamzamy Latief and Endra Yuliawan
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Indranova Suhendro: Universitas Gadjah Mada
Sonna Diwijaya: Universitas Gadjah Mada
Zulfa Yogi Rahmawati: Universitas Gadjah Mada
Pandu Eka Priyana: Universitas Gadjah Mada
Revina Fitri Zen: Universitas Gadjah Mada
Andre Jonathan: Universitas Gadjah Mada
Muhamamad Alsamtu Tita Sabila Pratama Suhartono: Universitas Gadjah Mada
Gammanda Adhny El Zamzamy Latief: Universitas Gadjah Mada
Endra Yuliawan: Universitas Gadjah Mada

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2024, vol. 120, issue 6, No 34, 5785-5809

Abstract: Abstract This study documents the first record of seven-, Quaternary ( 1.1 ka) lapilli fall layers at Sumbing volcano, Central Java, Indonesia. These lapilli layers (from lower towards upper stratigraphic height) are named orange–red lapilli, dark brown lapilli, orange lapilli, red–brown lapilli, blackish brown lapilli, pale red lapilli, and red lapilli. All deposits were dominated by juvenile scoria ( $$C_{scoria}$$ C scoria = 54–96%) with various portions of volcanic lithics ( $$C_{lithics}$$ C lithics = 4–44%). The products were dispersed across a wide area (400–2149 km2 for 1 cm isopach), suggesting sub-Plinian to Plinian intensity, with mean eruption plumes reaching 15–28 km and volcano explosivity index (VEI) of 3–4. The deposition of tephra (lapilli) on the roof provides load pressure, thus threatening buildings from collapse. No significant bulk density ( $${\uprho }_{bulk}$$ ρ bulk ) variation between each lapilli deposit (690–813 kg/m3 for dry tephra, 856–1007 kg/m3 for wet tephra, and 1208–1422 kg/m3 for saturated tephra). Thus, tephra thickness ( $$h$$ h ) is believed to play the most significant role in controlling load pressure ( $$P = {\uprho }_{bulk} \times h$$ P = ρ bulk × h ), as it varies over three orders of magnitude (

Keywords: Sumbing volcano; Building susceptibility; Explosive eruptions; Isopach map; Lapilli fallouts; Load pressure (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11069-024-06449-9

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