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Geomorphology Characterization of Ica Basin and Its Influence on the Dynamic Response of Soils for Urban Seismic Hazards in Ica, Peru
Joint Authors
Bernal, Isabel
Tavera, Hernando
Sulla, Wilfredo
Arredondo, Luz
Oyola, Javier
Source
International Journal of Geophysics
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-01-17
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
We evaluated the influence of the geomorphology of Peru’s Ica Basin on the dynamic response of soils of the city of Ica.
We applied five geophysical methods: spectral ratio (H/V), frequency-wavenumber (F-K), multichannel analysis of surface waves (MASW), multichannel analysis of microtremor (MAM), and Gravimetric Analysis.
Our results indicate that the soils respond to two frequency ranges: F0 (0.4–0.8 Hz) and F1 (1.0–3.0 Hz).
The F-K, which considers circular arrays, shows two tendencies with a jump between 1.0 and 2.0 Hz.
MASW and MAM contribute to frequencies greater than 2.0 Hz.
The inversion curve indicates the presence of three layers of 4, 16, and 60 m with velocities of 180, 250, and 400 m/s.
The Bouguer anomalies vary between −17.72 and −24.32 mGal and with the spectral analysis we identified two deposits, of 60 m and 150 m of thickness.
Likewise, the relationship between the velocities of 400 and 900 m/s, with the frequency = 1.5 Hz, allows us to determine the thickness for the layers of 60 (slightly alluvial to moderately compact) and 150 m (soil-rock interface).
These results suggest that the morphology of the Ica Basin plays an important role in the dynamic behavior of the soils to low frequency.
American Psychological Association (APA)
Bernal, Isabel& Tavera, Hernando& Sulla, Wilfredo& Arredondo, Luz& Oyola, Javier. 2018. Geomorphology Characterization of Ica Basin and Its Influence on the Dynamic Response of Soils for Urban Seismic Hazards in Ica, Peru. International Journal of Geophysics،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1173021
Modern Language Association (MLA)
Bernal, Isabel…[et al.]. Geomorphology Characterization of Ica Basin and Its Influence on the Dynamic Response of Soils for Urban Seismic Hazards in Ica, Peru. International Journal of Geophysics No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1173021
American Medical Association (AMA)
Bernal, Isabel& Tavera, Hernando& Sulla, Wilfredo& Arredondo, Luz& Oyola, Javier. Geomorphology Characterization of Ica Basin and Its Influence on the Dynamic Response of Soils for Urban Seismic Hazards in Ica, Peru. International Journal of Geophysics. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1173021
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1173021