GIS-based semi-variogram model selection for the preparation of Modified Mercalli Intensity map of Dinajpur Sadar, Bangladesh

Md Mahabub Rahman; Maharullah Sarder

Article Details

GIS-based semi-variogram model selection for the preparation of Modified Mercalli Intensity map of Dinajpur Sadar, Bangladesh

Authors:

Md Mahabub Rahman | Maharullah Sarder

Publisher:

Murat YAKAR

Main Topics:

Geographical Information Systems (GIS) in Planning

Journal:

International Journal of Engineering and Geosciences Vol.11 Issue 1, pp.136-148

Document Type:

Article

Publication Date:

1/2025

Document Language:

English

Document ID (Org No.):

2001356289

pISSN:

2548-0960

Keywords:

Abstract:

 This investigation examines the semi-variogram models to create a more accurate seismic intensity map in terms of the modified Mercalli intensity MMI map of Dinajpur District, Bangladesh. Since Dinajpur District has been listed as a seismically disaster-prone region in the World, an intensity map is crucial and necessary for construction. A large number of significant earthquakes have occurred in this region. Using Geographic Information Technology, MMI map for the study region was created using these earthquakes. To make the MMI map, at first the shear wave velocity Vs was calculated using soil investigation reports, comprising 148 boreholes with standard penetration test values SPT-N. The widely used empirical equations were used to convert the Vs to site amplification factor AF and to calculate the Peak Ground Acceleration PGA. Then, using PGA and AF, the surface acceleration SA for the research region was determined. The SA has finally been converted into the MMI map. The results demonstrate that the least and maximum PGA are 0.07 g and 0.094 g, while the AF ranges from 2.13 to 3.15 between the minimum and maximum. Moreover, the SA varies between 0.17g and 0.28g. The MMI map revels that 8.43 of areas having intensity VII and 91.57 having intensity VIII will be affected for Dinajpur Sadar Upazila. The prepared map may be beneficial to design seismically stable structures in the research region.

 This investigation examines the semi-variogram models to create a more accurate seismic intensity map in terms of the modified Mercalli intensity MMI map of Dinajpur District, Bangladesh. Since Dinajpur District has been listed as a seismically disaster-prone region in the World, an intensity map is crucial and necessary for construction. A large number of significant earthquakes have occurred in this region. Using Geographic Information Technology, MMI map for the study region was created using these earthquakes. To make the MMI map, at first the shear wave velocity Vs was calculated using soil investigation reports, comprising 148 boreholes with standard penetration test values SPT-N. The widely used empirical equations were used to convert the Vs to site amplification factor AF and to calculate the Peak Ground Acceleration PGA. Then, using PGA and AF, the surface acceleration SA for the research region was determined. The SA has finally been converted into the MMI map. The results demonstrate that the least and maximum PGA are 0.07 g and 0.094 g, while the AF ranges from 2.13 to 3.15 between the minimum and maximum. Moreover, the SA varies between 0.17g and 0.28g. The MMI map revels that 8.43 of areas having intensity VII and 91.57 having intensity VIII will be affected for Dinajpur Sadar Upazila. The prepared map may be beneficial to design seismically stable structures in the research region.

 This investigation examines the semi-variogram models to create a more accurate seismic intensity map in terms of the modified Mercalli intensity MMI map of Dinajpur District, Bangladesh. Since Dinajpur District has been listed as a seismically disaster-prone region in the World, an intensity map is crucial and necessary for construction. A large number of significant earthquakes have occurred in this region. Using Geographic Information Technology, MMI map for the study region was created using these earthquakes. To make the MMI map, at first the shear wave velocity Vs was calculated using soil investigation reports, comprising 148 boreholes with standard penetration test values SPT-N. The widely used empirical equations were used to convert the Vs to site amplification factor AF and to calculate the Peak Ground Acceleration PGA. Then, using PGA and AF, the surface acceleration SA for the research region was determined. The SA has finally been converted into the MMI map. The results demonstrate that the least and maximum PGA are 0.07 g and 0.094 g, while the AF ranges from 2.13 to 3.15 between the minimum and maximum. Moreover, the SA varies between 0.17g and 0.28g. The MMI map revels that 8.43 of areas having intensity VII and 91.57 having intensity VIII will be affected for Dinajpur Sadar Upazila. The prepared map may be beneficial to design seismically stable structures in the research region.

 This investigation examines the semi-variogram models to create a more accurate seismic intensity map in terms of the modified Mercalli intensity MMI map of Dinajpur District, Bangladesh. Since Dinajpur District has been listed as a seismically disaster-prone region in the World, an intensity map is crucial and necessary for construction. A large number of significant earthquakes have occurred in this region. Using Geographic Information Technology, MMI map for the study region was created using these earthquakes. To make the MMI map, at first the shear wave velocity Vs was calculated using soil investigation reports, comprising 148 boreholes with standard penetration test values SPT-N. The widely used empirical equations were used to convert the Vs to site amplification factor AF and to calculate the Peak Ground Acceleration PGA. Then, using PGA and AF, the surface acceleration SA for the research region was determined. The SA has finally been converted into the MMI map. The results demonstrate that the least and maximum PGA are 0.07 g and 0.094 g, while the AF ranges from 2.13 to 3.15 between the minimum and maximum. Moreover, the SA varies between 0.17g and 0.28g. The MMI map revels that 8.43 of areas having intensity VII and 91.57 having intensity VIII will be affected for Dinajpur Sadar Upazila. The prepared map may be beneficial to design seismically stable structures in the research region.

Article Details

GIS-based semi-variogram model selection for the preparation of Modified Mercalli Intensity map of Dinajpur Sadar, Bangladesh

Authors:

Md Mahabub Rahman | Maharullah Sarder

Publisher:

Murat YAKAR

Main Topics:

Geographical Information Systems (GIS) in Planning

Journal:

International Journal of Engineering and Geosciences Vol.11 Issue 1, pp.136-148

Document Type:

Article

Publication Date:

1/2025

Document Language:

English

Document ID (Org No.):

2001356289

pISSN:

2548-0960

Semi-variogram

Modified Mercalli Intensity

Dinajpur Sadar

Surface Acceleration

Peak Ground Acceleration

Issues

Article Details

GIS-based semi-variogram model selection for the preparation of Modified Mercalli Intensity map of Dinajpur Sadar, Bangladesh

Authors: Md Mahabub Rahman | Maharullah Sarder

Publisher: Murat YAKAR

Main Topics: Geographical Information Systems (GIS) in Planning

Journal: International Journal of Engineering and Geosciences Vol.11 Issue 1, pp.136-148

Document Type: Article

Publication Date: 1/2025

Document Language: English

Document ID (Org No.): 2001356289

pISSN: 2548-0960

Semi-variogram

Modified Mercalli Intensity

Dinajpur Sadar

Surface Acceleration

Peak Ground Acceleration

Issues

Authors:

Md Mahabub Rahman | Maharullah Sarder

Publisher:

Murat YAKAR

Main Topics:

Geographical Information Systems (GIS) in Planning

Journal:

International Journal of Engineering and Geosciences Vol.11 Issue 1, pp.136-148

Document Type:

Article

Publication Date:

1/2025

Document Language:

English

Document ID (Org No.):

2001356289

pISSN:

2548-0960