Vertical motions in Thailand after the 2004 Sumatra–Andaman Earthquake from GPS observations and its geophysical modelling

Satirapod, Chalermchon; Trisirisatayawong, Itthi; Fleitout, Luce; Garaud, Jean-Didier; Simons, Wim

doi:10.1016/j.asr.2012.04.030

Cited by 22 publications

(23 citation statements)

References 25 publications

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“…4b, 5 and 6 have very high RSLR in the range of 19-33 mm y −1 . Recent studies suggest that in addition to land subsidence that followed the earthquake, the land now continues to sink due to seismic activity (Trisirisatayawong et al, 2011;Satirapod et al, 2013). Our results indicate a significant shift in the spatial pattern, whereas before the 2004 earthquake there were very large (and statistically distinct; Fig.…”

Section: Tablecontrasting

confidence: 56%

“…This has important consequences for the population of Bangkok and surrounded area. Vertical land movement as a result of continuous seismic activity is also contributing to RSLR in Thailand (Trisirisatayawong et al, 2011), as is the vertical land movement following the December 2004 Sumatra-Andaman Earthquake (Satirapod et al, 2013). Therefore estimating rate of sea level rise in Thailand is tricky and it must take vertical land movement into consideration; moreover, RSLR rates are not stationary, but sometimes rapidly changing with land movements due to groundwater extraction (Gornitz, 2001) and earthquakes (Sieh et al, 2008).…”

Section: Discussionmentioning

confidence: 98%

“…GPS measurements after the 2004 Sumatra-Andaman Earthquake show that many parts of Thailand are sinking at rates up to 10 mm y −1 . However, some projections of land subsidence for the next two decades in Bangkok area are estimated to be not more than 5 mm y −1 (Satirapod et al, 2013). Note that the area that has shown sinking, as mentioned above, extends approximately 650-1500 km away from the epicenter of the earthquake that caused the tsunami.…”

Section: Land Subsidence and The 2004 Sumatra-andaman Earthquakementioning

confidence: 94%

See 2 more Smart Citations

Spatial variations of sea level along the coast of Thailand: Impacts of extreme land subsidence, earthquakes and the seasonal monsoon

Saramul

Ezer

2014

Global and Planetary Change

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Section: Tablecontrasting

confidence: 56%

Section: Discussionmentioning

confidence: 98%

Section: Land Subsidence and The 2004 Sumatra-andaman Earthquakementioning

confidence: 94%

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Spatial variations of sea level along the coast of Thailand: Impacts of extreme land subsidence, earthquakes and the seasonal monsoon

Saramul

Ezer

2014

Global and Planetary Change

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“…In addition, similar postseismic trenchward motion and uplift were observed in the Andaman and Nicobar Islands [ Paul et al , ; Gahalaut et al , ]. In contrast, postseismic trenchward motion and subsidence up to 1 cm/yr were observed in Peninsular Malaysia and Thailand [ Panumastrakul et al , ; Satirapod et al , ].…”

Section: Geodetic Catalogmentioning

confidence: 75%

A unified GPS‐based earthquake catalog for the Sumatran plate boundary between 2002 and 2013

et al. 2015

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We have compiled the first self‐consistent GPS‐based earthquake catalog for the Sumatran plate boundary. Using continuous daily position time series from the Sumatran GPS Array (SuGAr), we document 30 earthquakes which occurred within or outside the SuGAr network from August 2002 through the end of 2013, and we provide estimates of both vertical and horizontal coseismic offsets associated with 1 M9.2, 3 M8, 6 M7, 19 M6, and 1 M5.9 earthquakes, as well as postseismic decay amplitudes and times associated with 9 M > 7 earthquakes and 1 M6.7 earthquake. For most of the previously studied earthquakes, our geodetic catalog provides more complete coseismic displacements than those published, showing consistent patterns of motion across a large range of distances. For many of the moderate to large earthquakes, we publish their coseismic displacements for the first time, providing new constraints on their locations and slip distributions. For the postseismic time series, we have tackled the challenge of separating the signals for individual events from the overlapping effects of many other earthquakes. As a result, we have obtained either new or much longer time series than previously published. Based on our long time series, we find logarithmic decay times ranging from several days to more than 20 years, and sometimes a second decay time is needed, suggesting that when studying large to great Sumatran earthquakes, we need to consider multiple postseismic mechanisms. Our geodetic catalog provides rich spatial and temporal Sumatran earthquake cycle information for future studies of the physics and dynamics of the Sumatran plate boundary.

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“…This megathrust earthquake caused significant co-seismic deformation (from geodetic kinematic results) up to a couple thousand km away from its epicenter (Stein and Okal 2005;Vigny et al 2005). Peninsular Malaysia, just as many other regions in Southeast Asia such as Sumatra, Java, Thailand, and Myanmar have been coseismically displaced and subsequently undergoing great postseismic relaxation at the centimetre to decimetre level that will probably continue for many years (Satirapod et al 2013;Panumastrakul et al 2012;Anugrah et al 2015;Kreemer et al 2006).…”

Section: Introductionmentioning

confidence: 99%

ESTIMATION OF CO- AND POSTSEISMIC DEFORMATION AFTER THE Mw 8.6 NIAS-SEMEULUE AND Mw 8.5 BENGKULU EARTHQUAKES FROM CONTINUOUS GPS DATA

Aris

Musa

Omar

2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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The Mw 8.5 Bengkulu earthquake of 30 September 2007 and the Mw8.6 28 March 2005 are considered amongst large earthquake ever recorded in Southeast Asia. The impact into tectonic deformation was recorded by a network of Global Positioning System (GPS) Continuously Operating Reference Station (CORS) within southern of Sumatra and west-coast of Peninsular Malaysia. The GPS data from the GPS CORS network has been deployed to investigate the characteristic of postseismic deformation due to the earthquakes. Analytical logarithmic and exponential function was applied to investigate the deformation decay period of postseismic deformation. This investigation provides a preliminary insight into postseismic cycle along the Sumatra subduction zone in particular and on the dynamics Peninsular Malaysia in general.

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Vertical motions in Thailand after the 2004 Sumatra–Andaman Earthquake from GPS observations and its geophysical modelling

Cited by 22 publications

References 25 publications

Spatial variations of sea level along the coast of Thailand: Impacts of extreme land subsidence, earthquakes and the seasonal monsoon

Spatial variations of sea level along the coast of Thailand: Impacts of extreme land subsidence, earthquakes and the seasonal monsoon

A unified GPS‐based earthquake catalog for the Sumatran plate boundary between 2002 and 2013

ESTIMATION OF CO- AND POSTSEISMIC DEFORMATION AFTER THE Mw 8.6 NIAS-SEMEULUE AND Mw 8.5 BENGKULU EARTHQUAKES FROM CONTINUOUS GPS DATA

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