Angola seismicity
This work describes the development of the Angolan earthquake catalog and seismicity distribution in the Southwestern African Plate, in Angola. This region is one of the least seismically active, even for stable continental regions (SCRs) in the world. The maximum known earthquake had a magnitude of...
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| Veröffentlicht in: | Journal of seismology 2018-09, Vol.22 (5), p.1113-1126 |
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| creator | Neto, Francisco António Pereira França, George Sand Condori, Cristobal Sant’Anna Marotta, Giuliano Chimpliganond, Cristiano Naibert |
| description | This work describes the development of the Angolan earthquake catalog and seismicity distribution in the Southwestern African Plate, in Angola. This region is one of the least seismically active, even for stable continental regions (SCRs) in the world. The maximum known earthquake had a magnitude of 6.0 M
s
, while events with magnitudes of 4.5 have return period of about 10 years. Events with magnitude 5 and above occur with return period of about 20 years. Five seismic zones can be confirmed in Angola, within and along craton edges and in the sedimentary basins including offshore. Overall, the exposed cratonic regions tend to have more earthquakes compared to other regions such as sedimentary basins. Earthquakes tend to occur in Archaic rocks, especially inside preexisting weakness zones and in tectonic-magmatic reactivation zones of Mesozoic and Meso-Cenozoic, associated with the installation of a wide variety of intrusive rocks, strongly marked by intense tectonism. This fact can be explained by the models of preexisting weakness zones and stress concentration near intersecting structures. The Angolan passive margin is also a new region where seismic activity occurs. Although clear differences are found between different areas along the passive margin, in the middle near Porto Amboim city, seismic activity is more frequent compared with northwestern and southwestern regions. |
| doi_str_mv | 10.1007/s10950-018-9754-9 |
| format | Article |
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s
, while events with magnitudes of 4.5 have return period of about 10 years. Events with magnitude 5 and above occur with return period of about 20 years. Five seismic zones can be confirmed in Angola, within and along craton edges and in the sedimentary basins including offshore. Overall, the exposed cratonic regions tend to have more earthquakes compared to other regions such as sedimentary basins. Earthquakes tend to occur in Archaic rocks, especially inside preexisting weakness zones and in tectonic-magmatic reactivation zones of Mesozoic and Meso-Cenozoic, associated with the installation of a wide variety of intrusive rocks, strongly marked by intense tectonism. This fact can be explained by the models of preexisting weakness zones and stress concentration near intersecting structures. The Angolan passive margin is also a new region where seismic activity occurs. Although clear differences are found between different areas along the passive margin, in the middle near Porto Amboim city, seismic activity is more frequent compared with northwestern and southwestern regions.</description><identifier>ISSN: 1383-4649</identifier><identifier>EISSN: 1573-157X</identifier><identifier>DOI: 10.1007/s10950-018-9754-9</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Activation ; Basins ; Cenozoic ; Cratons ; Earth and Environmental Science ; Earth Sciences ; Earthquakes ; Geophysics/Geodesy ; Geotechnical Engineering & Applied Earth Sciences ; Hydrogeology ; Mesozoic ; Offshore ; Original Article ; Passive margins ; Plates (tectonics) ; Regions ; Rock ; Rocks ; Sedimentary basins ; Seismic activity ; Seismic zones ; Seismicity ; Seismology ; Stress concentration ; Structural Geology</subject><ispartof>Journal of seismology, 2018-09, Vol.22 (5), p.1113-1126</ispartof><rights>Springer Science+Business Media B.V., part of Springer Nature 2018</rights><rights>Journal of Seismology is a copyright of Springer, (2018). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-86239b9503a42a75002e07cea1a7784cc78b25db7ebe1e0a2e92ad73037ee9113</citedby><cites>FETCH-LOGICAL-c316t-86239b9503a42a75002e07cea1a7784cc78b25db7ebe1e0a2e92ad73037ee9113</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10950-018-9754-9$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10950-018-9754-9$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids></links><search><creatorcontrib>Neto, Francisco António Pereira</creatorcontrib><creatorcontrib>França, George Sand</creatorcontrib><creatorcontrib>Condori, Cristobal</creatorcontrib><creatorcontrib>Sant’Anna Marotta, Giuliano</creatorcontrib><creatorcontrib>Chimpliganond, Cristiano Naibert</creatorcontrib><title>Angola seismicity</title><title>Journal of seismology</title><addtitle>J Seismol</addtitle><description>This work describes the development of the Angolan earthquake catalog and seismicity distribution in the Southwestern African Plate, in Angola. This region is one of the least seismically active, even for stable continental regions (SCRs) in the world. The maximum known earthquake had a magnitude of 6.0 M
s
, while events with magnitudes of 4.5 have return period of about 10 years. Events with magnitude 5 and above occur with return period of about 20 years. Five seismic zones can be confirmed in Angola, within and along craton edges and in the sedimentary basins including offshore. Overall, the exposed cratonic regions tend to have more earthquakes compared to other regions such as sedimentary basins. Earthquakes tend to occur in Archaic rocks, especially inside preexisting weakness zones and in tectonic-magmatic reactivation zones of Mesozoic and Meso-Cenozoic, associated with the installation of a wide variety of intrusive rocks, strongly marked by intense tectonism. This fact can be explained by the models of preexisting weakness zones and stress concentration near intersecting structures. The Angolan passive margin is also a new region where seismic activity occurs. Although clear differences are found between different areas along the passive margin, in the middle near Porto Amboim city, seismic activity is more frequent compared with northwestern and southwestern regions.</description><subject>Activation</subject><subject>Basins</subject><subject>Cenozoic</subject><subject>Cratons</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Earthquakes</subject><subject>Geophysics/Geodesy</subject><subject>Geotechnical Engineering & Applied Earth Sciences</subject><subject>Hydrogeology</subject><subject>Mesozoic</subject><subject>Offshore</subject><subject>Original Article</subject><subject>Passive margins</subject><subject>Plates (tectonics)</subject><subject>Regions</subject><subject>Rock</subject><subject>Rocks</subject><subject>Sedimentary basins</subject><subject>Seismic activity</subject><subject>Seismic zones</subject><subject>Seismicity</subject><subject>Seismology</subject><subject>Stress concentration</subject><subject>Structural Geology</subject><issn>1383-4649</issn><issn>1573-157X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1j01LAzEQhoMoWKsHj94Ez9GZfGySYylahYIXBW8hm07Llna3JttD_71ZVvDkZd45vB88jN0hPCKAecoITgMHtNwZrbg7YxPURvJyvs7LL63kqlLukl3lvAUAZ52csNtZu-l24T5Tk_dNbPrTNbtYh12mm1-dss-X54_5K1--L97msyWPEque20pIV5dNGZQIRgMIAhMpYDDGqhiNrYVe1YZqQoIgyImwMhKkIXKIcsoext5D6r6PlHu_7Y6pLZNegKqc0NoNLhxdMXU5J1r7Q2r2IZ08gh_I_UjuC7kfyL0rGTFmcvG2G0p_zf-HfgDH2Vjs</recordid><startdate>20180901</startdate><enddate>20180901</enddate><creator>Neto, Francisco António Pereira</creator><creator>França, George Sand</creator><creator>Condori, Cristobal</creator><creator>Sant’Anna Marotta, Giuliano</creator><creator>Chimpliganond, Cristiano Naibert</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7ST</scope><scope>7TG</scope><scope>7TN</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L6V</scope><scope>M2P</scope><scope>M7S</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>SOI</scope></search><sort><creationdate>20180901</creationdate><title>Angola seismicity</title><author>Neto, Francisco António Pereira ; França, George Sand ; Condori, Cristobal ; Sant’Anna Marotta, Giuliano ; Chimpliganond, Cristiano Naibert</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-86239b9503a42a75002e07cea1a7784cc78b25db7ebe1e0a2e92ad73037ee9113</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Activation</topic><topic>Basins</topic><topic>Cenozoic</topic><topic>Cratons</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Earthquakes</topic><topic>Geophysics/Geodesy</topic><topic>Geotechnical Engineering & Applied Earth Sciences</topic><topic>Hydrogeology</topic><topic>Mesozoic</topic><topic>Offshore</topic><topic>Original Article</topic><topic>Passive margins</topic><topic>Plates (tectonics)</topic><topic>Regions</topic><topic>Rock</topic><topic>Rocks</topic><topic>Sedimentary basins</topic><topic>Seismic activity</topic><topic>Seismic zones</topic><topic>Seismicity</topic><topic>Seismology</topic><topic>Stress concentration</topic><topic>Structural Geology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Neto, Francisco António Pereira</creatorcontrib><creatorcontrib>França, George Sand</creatorcontrib><creatorcontrib>Condori, Cristobal</creatorcontrib><creatorcontrib>Sant’Anna Marotta, Giuliano</creatorcontrib><creatorcontrib>Chimpliganond, Cristiano Naibert</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Environment Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Environmental Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><collection>Environment Abstracts</collection><jtitle>Journal of seismology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Neto, Francisco António Pereira</au><au>França, George Sand</au><au>Condori, Cristobal</au><au>Sant’Anna Marotta, Giuliano</au><au>Chimpliganond, Cristiano Naibert</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Angola seismicity</atitle><jtitle>Journal of seismology</jtitle><stitle>J Seismol</stitle><date>2018-09-01</date><risdate>2018</risdate><volume>22</volume><issue>5</issue><spage>1113</spage><epage>1126</epage><pages>1113-1126</pages><issn>1383-4649</issn><eissn>1573-157X</eissn><abstract>This work describes the development of the Angolan earthquake catalog and seismicity distribution in the Southwestern African Plate, in Angola. This region is one of the least seismically active, even for stable continental regions (SCRs) in the world. The maximum known earthquake had a magnitude of 6.0 M
s
, while events with magnitudes of 4.5 have return period of about 10 years. Events with magnitude 5 and above occur with return period of about 20 years. Five seismic zones can be confirmed in Angola, within and along craton edges and in the sedimentary basins including offshore. Overall, the exposed cratonic regions tend to have more earthquakes compared to other regions such as sedimentary basins. Earthquakes tend to occur in Archaic rocks, especially inside preexisting weakness zones and in tectonic-magmatic reactivation zones of Mesozoic and Meso-Cenozoic, associated with the installation of a wide variety of intrusive rocks, strongly marked by intense tectonism. This fact can be explained by the models of preexisting weakness zones and stress concentration near intersecting structures. The Angolan passive margin is also a new region where seismic activity occurs. Although clear differences are found between different areas along the passive margin, in the middle near Porto Amboim city, seismic activity is more frequent compared with northwestern and southwestern regions.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s10950-018-9754-9</doi><tpages>14</tpages></addata></record> |
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| language | eng |
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| subjects | Activation Basins Cenozoic Cratons Earth and Environmental Science Earth Sciences Earthquakes Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Hydrogeology Mesozoic Offshore Original Article Passive margins Plates (tectonics) Regions Rock Rocks Sedimentary basins Seismic activity Seismic zones Seismicity Seismology Stress concentration Structural Geology |
| title | Angola seismicity |
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