scholarly journals Strain accumulation in South Korea inferred from GPS measurements

2006 ◽  
Vol 58 (5) ◽  
pp. 529-534 ◽  
Author(s):  
Shuanggen Jin ◽  
Pil-Ho Park
Keyword(s):  
South Korea ◽  
Strain Accumulation ◽  
Gps Measurements

The Measurement of Railway Using VRS GPS

2013 ◽  
Vol 446-447 ◽  
pp. 1118-1122 ◽  
Author(s):  
Eun Soo Lee ◽  
Woo Sang Lee ◽  
Kwang Man Lim ◽  
Myung Seok Bang
Keyword(s):  
South Korea ◽  
Gps Receiver ◽  
Gps Measurements ◽  
Gps Receivers ◽  
Location Data ◽  
Standard Design ◽  
One Stop ◽  
Gps Accuracy ◽  
Railway Maintenance ◽  
Design Dimension

This study is based on those data gathered on a 450m-long railway with a VRS GPS. In addition, certain location data on a railway were gathered through three 'Continuous VRS GPS' measurements and one 'Stop & Go VRS GPS' measurements while a railway-maintenance vehicle with GPS receivers mounted on its left & right sides was moving, Based on these location data, an average inter-rail space was analyzed. As a result of the analysis, the inter-rail space ranged from 1480mm to 1530mm. Based on the standard design dimension of an inter-rail space equal to 1,500mm and the average VRS GPS accuracy of ±3cm permissible in South Korea, the range was acceptable. Furthermore, if the center of a GPS receiver is placed over the vertical line of a rail center, more accurate location data on the railway could have been gathered.

Strain accumulation 1986-1992 across the Reykjanes Peninsula Plate Boundary, Iceland, determined from GPS measurements

1994 ◽  
Vol 21 (2) ◽  
pp. 125-128 ◽  
Author(s):  
Erik Sturkell ◽  
Freysteinn Sigmundsson ◽  
Páll Einarsson ◽  
Roger Bilham
Keyword(s):  
Plate Boundary ◽  
Strain Accumulation ◽  
Gps Measurements ◽  
Reykjanes Peninsula

scholarly journals Why Do Great Earthquakes Follow Each Other at Subduction Zones?

Eos ◽  
2017 ◽  
Author(s):  
Terri Cook
Keyword(s):  
South America ◽  
Subduction Zones ◽  
Great Earthquake ◽  
Strain Accumulation ◽  
Gps Measurements ◽  
Great Earthquakes ◽  
Enhanced Strain ◽  
Continuous Gps

A decade of continuous GPS measurements in South America indicates that enhanced strain accumulation following a great earthquake can initiate failure along adjacent fault segments.

scholarly journals Estimation of crustal deformation parameters and strain build-up in Northwest Himalaya using GNSS data measurements

2021 ◽  
Vol 51 (3) ◽  
pp. 225-243
Author(s):  
Abhishek YADAV ◽  
Suresh KANNAUJIYA ◽  
Prashant Kumar CHAMPATI RAY ◽  
Rajeev Kumar YADAV ◽  
Param Kirti GAUTAM
Keyword(s):  
Seismic Hazard ◽  
Strain Rate ◽  
Accumulation Rate ◽  
Himalayan Region ◽  
Compression Rate ◽  
Strain Accumulation ◽  
Gps Measurements ◽  
Baseline Method ◽  
Maximum Shear Strain ◽  
Continuous Gps

GPS measurements have proved extremely useful in quantifying strain accumulation rate and assessing seismic hazard in a region. Continuous GPS measurements provide estimates of secular motion used to understand the earthquake and other geodynamic processes. GNSS stations extending from the South of India to the Higher Himalayan region have been used to quantify the strain build-up rate in Central India and the Himalayan region to assess the seismic hazard potential in this realm. Velocity solution has been determined after the application of Markov noise estimated from GPS time series data. The recorded GPS data are processed along with the closest International GNSS stations data for estimation of daily basis precise positioning. The baseline method has been used for the estimation of the linear strain rate between the two stations. Whereas the principal strain axes, maximum shear strain, rotation rate, and crustal shortening rate has been calculated through the site velocity using an independent approach; least-square inversion approach-based triangulation method. The strain rate analysis estimated by the triangulation approach exhibits a mean value of extension rate of 26.08 nano-strain/yr towards N131°, the compression rate of –25.38 nano-strain/yr towards N41°, maximum shear strain rate of 51.47 nano-strain/yr, dilation of –37.57 nano-strain/yr and rotation rate of 0.7°/Ma towards anti-clockwise. The computed strain rate from the Baseline method and the Triangulation method reports an extensive compression rate that gradually increases from the Indo-Gangetic Plain in South to Higher Himalaya in North. The slip deficit rate between India and Eurasia Plate in Kumaun Garhwal Himalaya has been computed as 18±1.5 mm/yr based on elastic dislocation theory. Thus, in this study, present-day surface deformation rate and interseismic strain accumulation rate in the Himalayan region and the Central Indian region have been estimated for seismic hazard analysis using continuous GPS measurements.

scholarly journals Geodetic GPS measurements in south Iceland: Strain accumulation and partitioning in a propagating ridge system

2005 ◽  
Vol 110 (B11) ◽  
Author(s):  
P. C. LaFemina ◽  
T. H. Dixon ◽  
R. Malservisi ◽  
T. Árnadóttir ◽  
E. Sturkell ◽  
...  
Keyword(s):  
Strain Accumulation ◽  
Gps Measurements ◽  
Ridge System

Strain accumulation in the Shumagin Islands: Results of initial GPS measurements

1994 ◽  
Vol 21 (6) ◽  
pp. 489-492 ◽  
Author(s):  
Kristine M. Larson ◽  
Michael Lisowski
Keyword(s):  
Strain Accumulation ◽  
Gps Measurements
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