Temporal and Spatial Evolution Analysis of Earthquake Events in California and Nevada Based on Spatial Statistics
Studying the temporal and spatial evolution trends in earthquakes in an area is beneficial for determining the earthquake risk of the area so that local governments can make the correct decisions for disaster prevention and reduction. In this paper, we propose a new method for analyzing the temporal...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | ISPRS International Journal of Geo-Information |
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| Online Access: | https://www.mdpi.com/2220-9964/10/7/465 |
| _version_ | 1797527028431323136 |
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| author | Weifeng Shan Zhihao Wang Yuntian Teng Maofa Wang |
| author_facet | Weifeng Shan Zhihao Wang Yuntian Teng Maofa Wang |
| author_sort | Weifeng Shan |
| collection | DOAJ |
| description | Studying the temporal and spatial evolution trends in earthquakes in an area is beneficial for determining the earthquake risk of the area so that local governments can make the correct decisions for disaster prevention and reduction. In this paper, we propose a new method for analyzing the temporal and spatial evolution trends in earthquakes based on earthquakes of magnitude 3.0 or above from 1980 to 2019 in California and Nevada. The experiment’s results show that (1) the frequency of earthquake events of magnitude 4.5 or above present a relatively regular change trend of decreasing–rising in this area; (2) by using the weighted average center method to analyze the spatial concentration of earthquake events of magnitude 3.0 or above in this region, we find that the weighted average center of the earthquake events in this area shows a conch-type movement law, where it moves closer to the center from all sides; (3) the direction of the spatial distribution of earthquake events in this area shows a NW–SE pattern when the standard deviational ellipse (SDE) method is used, which is basically consistent with the direction of the San Andreas Fault Zone across the north and south of California; and (4) the spatial distribution pattern of the earthquake events in this region is found to be clustered using the global spatial autocorrelation analysis method. This study provides a new perspective for the exploration of the temporal and spatial evolution trends in earthquakes and understanding the earthquake risk in an area. |
| first_indexed | 2024-03-10T09:38:07Z |
| format | Article |
| id | doaj.art-4bb13eafdc2c47b79bbbce1370114c84 |
| institution | Directory Open Access Journal |
| issn | 2220-9964 |
| language | English |
| last_indexed | 2024-03-10T09:38:07Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ISPRS International Journal of Geo-Information |
| spelling | doaj.art-4bb13eafdc2c47b79bbbce1370114c842023-11-22T03:54:56ZengMDPI AGISPRS International Journal of Geo-Information2220-99642021-07-0110746510.3390/ijgi10070465Temporal and Spatial Evolution Analysis of Earthquake Events in California and Nevada Based on Spatial StatisticsWeifeng Shan0Zhihao Wang1Yuntian Teng2Maofa Wang3Institute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaSchool of Emergency Management, Institute of Disaster Prevention, Langfang 065201, ChinaInstitute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaSchool of Computer and Information Security, Guilin University of Electronic Science and Technology, Guilin 541004, ChinaStudying the temporal and spatial evolution trends in earthquakes in an area is beneficial for determining the earthquake risk of the area so that local governments can make the correct decisions for disaster prevention and reduction. In this paper, we propose a new method for analyzing the temporal and spatial evolution trends in earthquakes based on earthquakes of magnitude 3.0 or above from 1980 to 2019 in California and Nevada. The experiment’s results show that (1) the frequency of earthquake events of magnitude 4.5 or above present a relatively regular change trend of decreasing–rising in this area; (2) by using the weighted average center method to analyze the spatial concentration of earthquake events of magnitude 3.0 or above in this region, we find that the weighted average center of the earthquake events in this area shows a conch-type movement law, where it moves closer to the center from all sides; (3) the direction of the spatial distribution of earthquake events in this area shows a NW–SE pattern when the standard deviational ellipse (SDE) method is used, which is basically consistent with the direction of the San Andreas Fault Zone across the north and south of California; and (4) the spatial distribution pattern of the earthquake events in this region is found to be clustered using the global spatial autocorrelation analysis method. This study provides a new perspective for the exploration of the temporal and spatial evolution trends in earthquakes and understanding the earthquake risk in an area.https://www.mdpi.com/2220-9964/10/7/465spatial statisticstemporal and spatial evolutionweighted average centerstandard deviational ellipseglobal spatial autocorrelation analysisearthquake risk |
| spellingShingle | Weifeng Shan Zhihao Wang Yuntian Teng Maofa Wang Temporal and Spatial Evolution Analysis of Earthquake Events in California and Nevada Based on Spatial Statistics ISPRS International Journal of Geo-Information spatial statistics temporal and spatial evolution weighted average center standard deviational ellipse global spatial autocorrelation analysis earthquake risk |
| title | Temporal and Spatial Evolution Analysis of Earthquake Events in California and Nevada Based on Spatial Statistics |
| title_full | Temporal and Spatial Evolution Analysis of Earthquake Events in California and Nevada Based on Spatial Statistics |
| title_fullStr | Temporal and Spatial Evolution Analysis of Earthquake Events in California and Nevada Based on Spatial Statistics |
| title_full_unstemmed | Temporal and Spatial Evolution Analysis of Earthquake Events in California and Nevada Based on Spatial Statistics |
| title_short | Temporal and Spatial Evolution Analysis of Earthquake Events in California and Nevada Based on Spatial Statistics |
| title_sort | temporal and spatial evolution analysis of earthquake events in california and nevada based on spatial statistics |
| topic | spatial statistics temporal and spatial evolution weighted average center standard deviational ellipse global spatial autocorrelation analysis earthquake risk |
| url | https://www.mdpi.com/2220-9964/10/7/465 |
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