Large-scale deformation caused by dyke intrusion beneath eastern Hainan Island, China observed using InSAR

Ji, Lanlan; Hu, Yang; Wang, Qingliang; Xu, Xiaofeng; Xu, Jiren

doi:10.1016/j.jog.2015.04.006

Cited by 12 publications

(5 citation statements)

References 33 publications

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“…Overlapping with each other, the three tracks together cover about a 250 km long continuous section of the ATF between longitudes 91.5 • E and 95.0 • E (Figure 1). The basic InSAR processing techniques employed herein were similar to those used in our previous studies [32][33][34]. The interferometric processing was performed with GAMMA software [35].…”

Section: Insar Data Processing Strategymentioning

confidence: 99%

InSAR-Constrained Interseismic Deformation and Potential Seismogenic Asperities on the Altyn Tagh Fault at 91.5–95°E, Northern Tibetan Plateau

Liu

Zhu

et al. 2018

Remote Sensing

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The present-day kinematic features of the different segments of the Altyn Tagh Fault (ATF) have been well-studied using geodetic data. However, on the eastern segment of the ATF at 91.5-95 • E, high spatial resolution deformation has not been previously reported. Here, we processed 185 interferometric synthetic aperture radar (InSAR) images from three descending tracks of the C band ERS-1/2 and Envisat satellites spanning 1995-2011 and obtained the average deformation velocity field. Results show a left-lateral motion of~4 mm/year along the fault-parallel direction across the ATF at 91.5-95 • E, which is consistent with Global Positioning System (GPS) observations. The slip deficit rate distribution at shallow depths was resolved through the InSAR deformation velocity using a discretized fault plane. The slip deficit is capable of an Mw 7.9 earthquake, considering the elapsed time of the latest M 7.0 event. Two potential asperities that could be nucleation sites or rupture areas of future earthquakes were delineated based on the coupling coefficient and seismicity distributions along the fault plane. The larger asperity extends more than 100 km along the ATF at depths of 8-12 km. Our InSAR observations support the undeformed blocks model of the Indo-Eurasian collisional mechanism at the northern margin of the Tibetan plateau.

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Section: Insar Data Processing Strategymentioning

confidence: 99%

InSAR-Constrained Interseismic Deformation and Potential Seismogenic Asperities on the Altyn Tagh Fault at 91.5–95°E, Northern Tibetan Plateau

Liu

Zhu

et al. 2018

Remote Sensing

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“…Simons, Fialko, and Rivera 2002;Lu and Dzurisin 2014;Ji et al 2015), landslide movement (e.g. Zhao et al 2012), fault creep (e.g.…”

Section: Introductionmentioning

confidence: 99%

Detecting land uplift associated with enhanced oil recovery using InSAR in the Karamay oil field, Xinjiang, China

Yong

Wang

et al. 2016

International Journal of Remote Sensing

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“…This can occur when magma is removed from the reservoir by lateral migration through dykes and sills or through an eruption. In a closed system and during eruption, net withdrawal is typically expressed by subsidence, whereas lateral migration can produce a complicated deformation signature with a combination of uplift and subsidence (e.g., Biggs et al, ; Ji et al, ). In an open system, a lateral withdrawal can correlate with a decrease in both outgassing rates and thermal output, or the outgassing source can migrate with the movement of magma.…”

Section: Methodsmentioning

confidence: 99%

“…Geochemistry, Geophysics, Geosystems signature with a combination of uplift and subsidence (e.g., Biggs et al, 2009;Ji et al, 2015). In an open system, a lateral withdrawal can correlate with a decrease in both outgassing rates and thermal output, or the outgassing source can migrate with the movement of magma.…”

Section: 1029/2019gc008494mentioning

confidence: 99%

Using Conceptual Models to Relate Multiparameter Satellite Data to Subsurface Volcanic Processes in Latin America

Reath

Pritchard

Biggs

et al. 2020

Geochem Geophys Geosyst

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Satellite data have been extensively used to identify volcanic behavior. However, the physical subsurface processes causing any individual manifestation of activity can be ambiguous. We propose a classification scheme for the cause of unrest that simultaneously considers three multiparameter satellite observations. The scheme is based on characteristics of the volcanic system (open, closed, and eruptive) and unrest mechanisms (intrusion, evolution, and withdrawal) occurring at shallow depths in the volcanic system. We applied these models to satellite observations acquired at 47 of the most active volcanoes in Latin America. Of the volcanoes studied, 44 had a robust enough dataset for classification and were clustered into 4 groups and 10 subgroups with common behavioral characteristics. By identifying that these volcanoes can be clustered into a number of groupings significantly less than the number of volcanoes, we have demonstrated that commonalities in behavior patterns exist among diverse volcanic systems. Identifying volcanoes with similar characteristics underpins the use of past observations at one volcano to forecast activity at another and diverges from typical volcanic groupings, which are focused on geologic parameters (i.e., composition, volcano type, and tectonic setting). Based on satellite data alone, we have identified preeruptive intrusion prior to 15 eruptions at 12 different volcanoes, magma evolution prior to 18 eruptions at 13 volcanoes, and magma withdrawal at 3 eruptions and 3 volcanoes. Improvements to the spatial and temporal resolution are needed to make these relations robust. This classification scheme provides a framework for future automated clustering of volcanoes.

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Large-scale deformation caused by dyke intrusion beneath eastern Hainan Island, China observed using InSAR

Cited by 12 publications

References 33 publications

InSAR-Constrained Interseismic Deformation and Potential Seismogenic Asperities on the Altyn Tagh Fault at 91.5–95°E, Northern Tibetan Plateau

InSAR-Constrained Interseismic Deformation and Potential Seismogenic Asperities on the Altyn Tagh Fault at 91.5–95°E, Northern Tibetan Plateau

Detecting land uplift associated with enhanced oil recovery using InSAR in the Karamay oil field, Xinjiang, China

Using Conceptual Models to Relate Multiparameter Satellite Data to Subsurface Volcanic Processes in Latin America

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