Analysis of Southern Segment of Sumatran Fault Monitoring Bench Mark as Preliminary Approach in Updating Earthquake Hazard Map

Alif, Satrio Muhammad; Pratama, Alvin

doi:10.35472/281470

Cited by 3 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lack of research on the southern segment of Sumatran Fault Zone is also caused by small numbers of monitoring bench marks around southern segment, especially in Lampung Province, which in only 14 periodic bench marks owned by Geospatial Agency of Indonesia and Ministry of Public Works and Housing (Alif et al, 2016;Alif et al, 2019). (Beon, 2008).…”

Section: Zone Southern Segment Of Sumatran Faultmentioning

confidence: 99%

Optimal Bench Mark Distribution to Monitor Southern Segment of Sumatran Fault

Alif

2019

geoeco

Self Cite

View full text Add to dashboard Cite

The southern segment of a Sumatran fault zone was one of the sources of earthquakes in Lampung Province. The source of hazard came from stress accumulation of crust, which can be derived from movement of bench mark in surface. Lack of research in southern segment was caused by small numbers of monitoring bench mark. This research shown optimal monitoring bench mark distribution by considering existing bench mark and location which is decent and representative to monitor Sumatran Fault Zone movement by considering on its position relative to Sumatran Fault Zone, earthquake history, Digital Elevation Model and land use. Decent location was determined by overlaying land use and slope processed from Digital Elevation Model. Representative location was determined by taking into account the distance to Sumatran Fault Zone and earthquake history. Very decent location is around 10.5 percent of the total area. Very representative location is around 44.5 percent of the total area. There are total 15 planned bench marks location to make southern Segment of Sumatran Fault Zone monitoring bench mark more optimal.

show abstract

Section: Zone Southern Segment Of Sumatran Faultmentioning

confidence: 99%

Optimal Bench Mark Distribution to Monitor Southern Segment of Sumatran Fault

Alif

2019

geoeco

Self Cite

View full text Add to dashboard Cite

show abstract

Segmentation of Sumatran Fault Zone in Tanggamus District, Lampung based on GPS Displacement and SRTM Data

Alif

Ardiansyah

Wiyono

2020

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

One of sources of earthquakes in Lampung Province is southern segment of Sumatran fault. The fault is used as consideration in generating hazard map which source comes from stress accumulation of crust which can be obtained by measurement of points in surface. Determining fault location is important for sustainable development in Lampung Province. Southern segment of Sumatran fault stretched on Kota Agung – capital of Tanggamus District, one of the cities with the oldest civilization in Lampung Province. The sedimentation of Kota Agung causes the delineation of Sumatran Fault Zone by using Digital Terrain Model conducted on previous research had flaw. GPS Displacement Data, Shuttle Radar Topography Mission (SRTM) Data and seismic activity are used as tools to determine the location of fault. SRTM Data has 30 meter resolution and measured in 2018. Seismic activity used in this research is obtained from USGS from last 100 years and is used as support data to determine whether the fault delineated with SRTM and GPS displacement is active. GPS displacement is derived from GPS coordinates measured periodically from 2006 to 2019. Displacement used in this research is horizontal displacement since Sumatran Fault is known as strike-slip fault that move on horizontal plane. The result resembles previous research. Location that has the highest possibility of Sumatran Fault Zone segmentation is identified as Sumatran Fault Zone segmentation on previous research named as West Semangko Fault, and East Semangko Fault, respectively. The only fault earthquakes occurred on location which is not identified Sumatran Fault Zone segmentation on previous research.

show abstract

GNSS Velocity and Strain Field in the Northern Sumatra 15 Years After the 2004 M9.2 Sumatra Andaman Earthquake

Alif,

Anggara,

Jihad

et al. 2024

Geodin. tektonofiz.

View full text Add to dashboard Cite

The 2004 M9.2 Sumatra-Andaman earthquake in the tectonically active northern Sumatra, could generate postseismic deformation up to a recent period and needs to be considered for earthquake potential study. The GNSS velocities before and 15 years after the earthquake were used to obtain preliminary indicator of whether the postseismic deformation still takes place. Recent velocities were calculated from the horizontal coordinate time series that is obtained using Bernese GNSS software version 5.2. To do this, a comparison was made of velocities and strain rates over two periods. The velocities of 5.5 to 40.5 mm/yr and the strain rate up to 47.2 μstrain/yr were obtained from the recently acquired GNSS data. The pattern for the two-period values can be defined where the direction of vector velocities is trenchward, and extensional behavior occurs more often in the northern area. This indicates that postseismic deformation still occurs therein even 15 years after the earthquake.

show abstract

Analysis of Southern Segment of Sumatran Fault Monitoring Bench Mark as Preliminary Approach in Updating Earthquake Hazard Map

Cited by 3 publications

References 5 publications

Optimal Bench Mark Distribution to Monitor Southern Segment of Sumatran Fault

Optimal Bench Mark Distribution to Monitor Southern Segment of Sumatran Fault

Segmentation of Sumatran Fault Zone in Tanggamus District, Lampung based on GPS Displacement and SRTM Data

GNSS Velocity and Strain Field in the Northern Sumatra 15 Years After the 2004 M9.2 Sumatra Andaman Earthquake

Contact Info

Product

Resources

About