GPR and high resolution seismic integrated methods to understand the liquefaction phenomena in the Mirabello Village (earthquake ML 5.9, 2012)

Baradello, Luca; Accaino, F.

doi:10.1016/j.enggeo.2016.06.027

Cited by 10 publications

(6 citation statements)

References 33 publications

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“…The subsurface structure of the land can be determined using several geophysical methods, one of which is the GPR method. The GPR method is a research method that uses electromagnetic wave signals with a high frequency of 10 -1000 MHz to detect and map shallow surface cracks [5][6][7]. The GPR method technique is to use Electromagnetic Subsurface Profiling (ESP), which utilizes the reflection of electromagnetic waves emitted by the ground surface through the antenna [8].…”

Section: Methodsmentioning

confidence: 99%

“…The GPR method is used to identify subsurface structures and map shallow surface fractures [7]. Ground motion can be determined using the GPR method because it requires a high transmitter to determine the subsurface area of ground motion which consists of dielectric constant, magnetic contrast, active faults, and water content [16].…”

Section: Measurement Of Gpr Methodsmentioning

confidence: 99%

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Geophysical investigation of the 2022 Cianjur earthquake: Uncovering a new active fault

Arwasaputra,

Setiawan,

Sugiarto

et al. 2024

E3S Web of Conf.

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An earthquake disaster struck the Cianjur area on November 21 2022, with a main earthquake measuring 5.6 Mw. Until April 2023, BMKG recorded that aftershock occurred 448 times with a magnitude range of 1 – 4.2 Mw. This event occurred due to underground movement caused by a fault. The fault that has been identified in the Cianjur area is the Cimandiri fault, however, the epicentre of the earthquake and the location of the Cimandiri fault line are approximately 20 km away. BMKG indicated that there was a new fault that was the cause of the earthquake. This research aims to determine subsurface conditions with indications of active faults in the areas affected by the 2022 Cianjur earthquake. Data acquisition was carried out at Cibulakan and Firdaus Mosque using the GPR method. The GPR method used is GSSI – SIR 3000 with a 270 MHz frequency antenna. Data processing was carried out using GPRPy software. Based on the processing that has been carried out, there are indications that the fault stretches perpendicularly in a north–south direction at a depth of approximately 2 m below the ground surface. Apart from that, the rock that makes up the area is volcanic rock.

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Section: Methodsmentioning

confidence: 99%

Section: Measurement Of Gpr Methodsmentioning

confidence: 99%

Geophysical investigation of the 2022 Cianjur earthquake: Uncovering a new active fault

Arwasaputra,

Setiawan,

Sugiarto

et al. 2024

E3S Web of Conf.

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“…While a final solution about the seismogenic origin of the injection dikes must be accepted, based on geological and structural indicative criteria, preliminarily these structures and other liquefaction features might be find on GPR images. Most of GPR works conclude that sand blows on radargrams are shown as stratigraphic disruptions of the radar events and disturbance of the GPR facie [Liu, Li, 2001;Al-Shukri et al, 2006;Nobes et al, 2013;Baradello, Accaino, 2016]. Charac-teristic anomalies, the shape of which is like a funnel or a pipe with disordered and stronger reflection are additional indicators of liquefaction on GPR images [Hsu et al, 2005;Lunina, Gladkov, 2016].…”

Section: Indicative Criteria Of Injection Dikes and Other Liquefactiomentioning

confidence: 99%

An Overview of Clastic Dikes: Significance for Earthquake Study

Лунина

2019

Geodin. tektonofiz.

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Clastic dikes are often the only evidence of past disasters in poorly exposed areas and therefore their findings are extremely important for earthquake study. However, the variety of their origins greatly complicates the use of clastic dikes to assess the seismic hazards within the manifold environments. This paper systematizes main triggers, formation mechanisms and some matching indicative features of tabular and cylindrical bodies with an emphasis on the importance of revealing the injection dikes formed by fluidized injection of clastic material into the host sedimentary layers (from the bottom upwards) and associated with overpressure buildup and hydraulic fracturing. Based on the revision of known seismic liquefaction features and specific descriptions of the injection dikes, this overview defines 12 general and 12 individual geological and structural criteria (for study in sectional view), which make it possible to establish confidently the earthquake origin of the dikes caused by fluidization from seismic liquefaction. In addition, ground penetrating radar data correlating with trenching suggest indicative searching criteria of the injection dikes on radargrams, namely: a pipe‐shaped anomaly or a composite anomaly combining a tubular form in the lower part with an isometric – in the upper [i]; relatively high values of unipolar positive echoes on the trace of GPR signal [ii]; an occurrence of the same anomaly on adjacent parallel profiles located the first tens of meters apart [iii]; and stratigraphic disruptions of the radar events on the background of their continuous horizontal position [iv]. Finally, the paper illustrates that the clastic dikes can be successfully applied to determine the age and the recurrence interval, the epicenter location and a lower‐bound magnitude/intensity of paleoearthquakes, thus providing geological data for seismic hazard assessments in the regions, in which unconsolidated deposits capable to liquefaction are common.

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“…Since around 1980, seismic reflection has been used not only for geotechnical and environmental purposes but also for underground coal exploration at which the depths of the target are typically less than 500 meters or shallow. Presently, the application of shallow seismic reflection survey includes mapping the quarternary deposits (Okkonen and Moisio, 2015;Maraio et al, 2018), buried rock valleys and shallow faults Burschil et al, 2018), hydrogeology studies (Al-Shuhail and Adetunji, 2016;Miller et al, 2016), mineral exploration (Hajnal et al, 2015;Malehmir et al, 2015), geotechnical investigation and hazard mitigation (Baradello and Accaino, 2016;Dehghannejad et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Shallow seismic reflection survey for imaging deep-seated coal layer - Case study from Muara Enim coal

Ramdhani

Ibrahim

Siregar

et al. 2021

IMJ

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Indonesia has a great potential for deep-seated coal resources. To assist and support the deep-seated coal exploration, a shallow seismic reflection method is applicable for this purpose. This study has conducted a shallow seismic reflection method in Musi Banyuasin Regency, South Sumatera Province. The Muara Enim coal target varies from 100 to 500 meters from the surface. The thickness of the coal layer varies from 2 to 10.65 meters. This study uses 48 channels with 14 Hz single geophone and MiniSosie as the energy source. The receiver and source interval is 15 meters. This study uses a fixed receiver and moving source configuration. From the interpreted seismic section, this study identified a deep-seated coal layer target. These layers are Mangus, Burung, Benuang, Kebon and Benakat layers. A simple interpretation is analyzed by combining the seismic amplitude characteristics and the thickness of the coal layer from the borehole data. From the interpreted seismic section, deep-seated coal layer targets have strong amplitude characteristics and are continuous from southwest to the northeast with a down-dip of around 20-30°. This study helps to inform the operator companies who develop the utilization of deep-seated coal (coalbed methane, underground coal gasification and underground coal mining) about the effective and proper geophysical method for imaging deep-seated coal layer.

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GPR and high resolution seismic integrated methods to understand the liquefaction phenomena in the Mirabello Village (earthquake ML 5.9, 2012)

Cited by 10 publications

References 33 publications

Geophysical investigation of the 2022 Cianjur earthquake: Uncovering a new active fault

Geophysical investigation of the 2022 Cianjur earthquake: Uncovering a new active fault

An Overview of Clastic Dikes: Significance for Earthquake Study

Shallow seismic reflection survey for imaging deep-seated coal layer - Case study from Muara Enim coal

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