Paleoseismologic investigation of the fault rupture of the 14 April 1928 Chirpan earthquake (M 6.8), southern Bulgaria
Identifieur interne : 000958 ( Main/Exploration ); précédent : 000957; suivant : 000959Paleoseismologic investigation of the fault rupture of the 14 April 1928 Chirpan earthquake (M 6.8), southern Bulgaria
Auteurs : K. Vanneste [Belgique] ; A. Radulov [Bulgarie] ; P. De Martini [Italie] ; G. Nikolov [Bulgarie] ; T. Petermans [Belgique] ; K. Verbeeck [Belgique] ; T. Camelbeeck [Belgique] ; D. Pantosti [Italie] ; D. Dimitrov [Bulgarie] ; S. Shanov [Bulgarie]Source :
- Journal of Geophysical Research: Solid Earth [ 0148-0227 ] ; 2006-01.
Abstract
Seventy‐five years after the destructive Chirpan earthquake of 14 April 1928, we conducted a paleoseismologic study of the causative fault combining a review of contemporary literature, geomorphology, geophysical prospecting, and trenching. We reidentified the fault scarp in the field, and mapped it over a distance of 12.5 km. Geophysical profiles and boreholes demonstrate that Chirpan scarp is the surface expression of a normal fault that was active throughout the Pleistocene and Holocene. In 2002, we excavated a paleoseismologic trench to study the faulting history. A narrow fault zone separates Plio‐Pleistocene alluvial sand in the footwall from Holocene alluvial and colluvial silt in the hanging wall. The 1928 earthquake is recorded by 0.45 m vertical offset of the topsoil, in accordance with contemporary descriptions. We identified three colluvial wedge‐like units in the hanging wall sediments next to the fault, evidencing at least three surface‐rupturing paleoearthquakes since the Atlantic. Their timing could only be loosely constrained using pollen. The penultimate event had an offset of 0.40–0.45 m and occurred after circa 2600 calibrated years before present (cal years B.P.). Event 3 displaced a Subboreal semiarid calcic soil 0.55–0.70 m between circa 5750 and 2600 cal years B.P. The fourth event had a minimal offset of 0.50–0.70 m and occurred between circa 8900 cal years B.P. and 4900 B.C., when the region was first settled. We obtain a Holocene fault slip rate of 0.22 ± 0.12 mm/yr and an average recurrence interval of 2350 ± 643 years for earthquakes comparable to or larger than the 1928 event.
Url:
DOI: 10.1029/2005JB003814
Affiliations:
- Belgique, Bulgarie, Italie
- Latium, Région de Bruxelles-Capitale, Sofia-ville (oblast)
- Bruxelles, Rome, Sofia
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 001717
- to stream Istex, to step Curation: 001709
- to stream Istex, to step Checkpoint: 000607
- to stream Main, to step Merge: 000968
- to stream Main, to step Curation: 000958
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Paleoseismologic investigation of the fault rupture of the 14 April 1928 Chirpan earthquake (M 6.8), southern Bulgaria</title><author><name sortKey="Vanneste, K" sort="Vanneste, K" uniqKey="Vanneste K" first="K." last="Vanneste">K. Vanneste</name></author><author><name sortKey="Radulov, A" sort="Radulov, A" uniqKey="Radulov A" first="A." last="Radulov">A. Radulov</name></author><author><name sortKey="De Martini, P" sort="De Martini, P" uniqKey="De Martini P" first="P." last="De Martini">P. De Martini</name></author><author><name sortKey="Nikolov, G" sort="Nikolov, G" uniqKey="Nikolov G" first="G." last="Nikolov">G. Nikolov</name></author><author><name sortKey="Petermans, T" sort="Petermans, T" uniqKey="Petermans T" first="T." last="Petermans">T. Petermans</name></author><author><name sortKey="Verbeeck, K" sort="Verbeeck, K" uniqKey="Verbeeck K" first="K." last="Verbeeck">K. Verbeeck</name></author><author><name sortKey="Camelbeeck, T" sort="Camelbeeck, T" uniqKey="Camelbeeck T" first="T." last="Camelbeeck">T. Camelbeeck</name></author><author><name sortKey="Pantosti, D" sort="Pantosti, D" uniqKey="Pantosti D" first="D." last="Pantosti">D. Pantosti</name></author><author><name sortKey="Dimitrov, D" sort="Dimitrov, D" uniqKey="Dimitrov D" first="D." last="Dimitrov">D. Dimitrov</name></author><author><name sortKey="Shanov, S" sort="Shanov, S" uniqKey="Shanov S" first="S." last="Shanov">S. Shanov</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:07078C9FE5CE0BFE09DEA93957FD64EDBE30330C</idno><date when="2006" year="2006">2006</date><idno type="doi">10.1029/2005JB003814</idno><idno type="url">https://api.istex.fr/document/07078C9FE5CE0BFE09DEA93957FD64EDBE30330C/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001717</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001717</idno><idno type="wicri:Area/Istex/Curation">001709</idno><idno type="wicri:Area/Istex/Checkpoint">000607</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000607</idno><idno type="wicri:doubleKey">0148-0227:2006:Vanneste K:paleoseismologic:investigation:of</idno><idno type="wicri:Area/Main/Merge">000968</idno><idno type="wicri:Area/Main/Curation">000958</idno><idno type="wicri:Area/Main/Exploration">000958</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Paleoseismologic investigation of the fault rupture of the 14 April 1928 Chirpan earthquake (M 6.8), southern Bulgaria</title><author><name sortKey="Vanneste, K" sort="Vanneste, K" uniqKey="Vanneste K" first="K." last="Vanneste">K. Vanneste</name><affiliation wicri:level="3"><country xml:lang="fr">Belgique</country><wicri:regionArea>Royal Observatory of Belgium, Brussels</wicri:regionArea><placeName><settlement type="city">Bruxelles</settlement><region nuts="2">Région de Bruxelles-Capitale</region></placeName></affiliation><affiliation wicri:level="1"><country wicri:rule="url">Belgique</country></affiliation></author><author><name sortKey="Radulov, A" sort="Radulov, A" uniqKey="Radulov A" first="A." last="Radulov">A. Radulov</name><affiliation wicri:level="3"><country xml:lang="fr">Bulgarie</country><wicri:regionArea>Geological Institute, Bulgarian Academy of Sciences, Sofia</wicri:regionArea><placeName><settlement type="city">Sofia</settlement><region nuts="2">Sofia-ville (oblast)</region></placeName></affiliation></author><author><name sortKey="De Martini, P" sort="De Martini, P" uniqKey="De Martini P" first="P." last="De Martini">P. De Martini</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>Istituto Nazionale di Geofisica e Vulcanologia, Rome</wicri:regionArea><placeName><settlement type="city">Rome</settlement><region nuts="2">Latium</region></placeName></affiliation></author><author><name sortKey="Nikolov, G" sort="Nikolov, G" uniqKey="Nikolov G" first="G." last="Nikolov">G. Nikolov</name><affiliation wicri:level="3"><country xml:lang="fr">Bulgarie</country><wicri:regionArea>Geological Institute, Bulgarian Academy of Sciences, Sofia</wicri:regionArea><placeName><settlement type="city">Sofia</settlement><region nuts="2">Sofia-ville (oblast)</region></placeName></affiliation></author><author><name sortKey="Petermans, T" sort="Petermans, T" uniqKey="Petermans T" first="T." last="Petermans">T. Petermans</name><affiliation wicri:level="3"><country xml:lang="fr">Belgique</country><wicri:regionArea>Royal Observatory of Belgium, Brussels</wicri:regionArea><placeName><settlement type="city">Bruxelles</settlement><region nuts="2">Région de Bruxelles-Capitale</region></placeName></affiliation></author><author><name sortKey="Verbeeck, K" sort="Verbeeck, K" uniqKey="Verbeeck K" first="K." last="Verbeeck">K. Verbeeck</name><affiliation wicri:level="3"><country xml:lang="fr">Belgique</country><wicri:regionArea>Royal Observatory of Belgium, Brussels</wicri:regionArea><placeName><settlement type="city">Bruxelles</settlement><region nuts="2">Région de Bruxelles-Capitale</region></placeName></affiliation></author><author><name sortKey="Camelbeeck, T" sort="Camelbeeck, T" uniqKey="Camelbeeck T" first="T." last="Camelbeeck">T. Camelbeeck</name><affiliation wicri:level="3"><country xml:lang="fr">Belgique</country><wicri:regionArea>Royal Observatory of Belgium, Brussels</wicri:regionArea><placeName><settlement type="city">Bruxelles</settlement><region nuts="2">Région de Bruxelles-Capitale</region></placeName></affiliation></author><author><name sortKey="Pantosti, D" sort="Pantosti, D" uniqKey="Pantosti D" first="D." last="Pantosti">D. Pantosti</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>Istituto Nazionale di Geofisica e Vulcanologia, Rome</wicri:regionArea><placeName><settlement type="city">Rome</settlement><region nuts="2">Latium</region></placeName></affiliation></author><author><name sortKey="Dimitrov, D" sort="Dimitrov, D" uniqKey="Dimitrov D" first="D." last="Dimitrov">D. Dimitrov</name><affiliation wicri:level="3"><country xml:lang="fr">Bulgarie</country><wicri:regionArea>Institute of Geodesy, Bulgarian Academy of Sciences, Sofia</wicri:regionArea><placeName><settlement type="city">Sofia</settlement><region nuts="2">Sofia-ville (oblast)</region></placeName></affiliation></author><author><name sortKey="Shanov, S" sort="Shanov, S" uniqKey="Shanov S" first="S." last="Shanov">S. Shanov</name><affiliation wicri:level="3"><country xml:lang="fr">Bulgarie</country><wicri:regionArea>Geological Institute, Bulgarian Academy of Sciences, Sofia</wicri:regionArea><placeName><settlement type="city">Sofia</settlement><region nuts="2">Sofia-ville (oblast)</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Geophysical Research: Solid Earth</title><title level="j" type="abbrev">J. Geophys. Res.</title><idno type="ISSN">0148-0227</idno><idno type="eISSN">2156-2202</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2006-01">2006-01</date><biblScope unit="volume">111</biblScope><biblScope unit="issue">B1</biblScope><biblScope unit="page" from="/">n/a</biblScope><biblScope unit="page" to="/">n/a</biblScope></imprint><idno type="ISSN">0148-0227</idno></series><idno type="istex">07078C9FE5CE0BFE09DEA93957FD64EDBE30330C</idno><idno type="DOI">10.1029/2005JB003814</idno><idno type="ArticleID">2005JB003814</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0148-0227</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Seventy‐five years after the destructive Chirpan earthquake of 14 April 1928, we conducted a paleoseismologic study of the causative fault combining a review of contemporary literature, geomorphology, geophysical prospecting, and trenching. We reidentified the fault scarp in the field, and mapped it over a distance of 12.5 km. Geophysical profiles and boreholes demonstrate that Chirpan scarp is the surface expression of a normal fault that was active throughout the Pleistocene and Holocene. In 2002, we excavated a paleoseismologic trench to study the faulting history. A narrow fault zone separates Plio‐Pleistocene alluvial sand in the footwall from Holocene alluvial and colluvial silt in the hanging wall. The 1928 earthquake is recorded by 0.45 m vertical offset of the topsoil, in accordance with contemporary descriptions. We identified three colluvial wedge‐like units in the hanging wall sediments next to the fault, evidencing at least three surface‐rupturing paleoearthquakes since the Atlantic. Their timing could only be loosely constrained using pollen. The penultimate event had an offset of 0.40–0.45 m and occurred after circa 2600 calibrated years before present (cal years B.P.). Event 3 displaced a Subboreal semiarid calcic soil 0.55–0.70 m between circa 5750 and 2600 cal years B.P. The fourth event had a minimal offset of 0.50–0.70 m and occurred between circa 8900 cal years B.P. and 4900 B.C., when the region was first settled. We obtain a Holocene fault slip rate of 0.22 ± 0.12 mm/yr and an average recurrence interval of 2350 ± 643 years for earthquakes comparable to or larger than the 1928 event.</div></front></TEI><affiliations><list><country><li>Belgique</li><li>Bulgarie</li><li>Italie</li></country><region><li>Latium</li><li>Région de Bruxelles-Capitale</li><li>Sofia-ville (oblast)</li></region><settlement><li>Bruxelles</li><li>Rome</li><li>Sofia</li></settlement></list><tree><country name="Belgique"><region name="Région de Bruxelles-Capitale"><name sortKey="Vanneste, K" sort="Vanneste, K" uniqKey="Vanneste K" first="K." last="Vanneste">K. Vanneste</name></region><name sortKey="Camelbeeck, T" sort="Camelbeeck, T" uniqKey="Camelbeeck T" first="T." last="Camelbeeck">T. Camelbeeck</name><name sortKey="Petermans, T" sort="Petermans, T" uniqKey="Petermans T" first="T." last="Petermans">T. Petermans</name><name sortKey="Vanneste, K" sort="Vanneste, K" uniqKey="Vanneste K" first="K." last="Vanneste">K. Vanneste</name><name sortKey="Verbeeck, K" sort="Verbeeck, K" uniqKey="Verbeeck K" first="K." last="Verbeeck">K. Verbeeck</name></country><country name="Bulgarie"><region name="Sofia-ville (oblast)"><name sortKey="Radulov, A" sort="Radulov, A" uniqKey="Radulov A" first="A." last="Radulov">A. Radulov</name></region><name sortKey="Dimitrov, D" sort="Dimitrov, D" uniqKey="Dimitrov D" first="D." last="Dimitrov">D. Dimitrov</name><name sortKey="Nikolov, G" sort="Nikolov, G" uniqKey="Nikolov G" first="G." last="Nikolov">G. Nikolov</name><name sortKey="Shanov, S" sort="Shanov, S" uniqKey="Shanov S" first="S." last="Shanov">S. Shanov</name></country><country name="Italie"><region name="Latium"><name sortKey="De Martini, P" sort="De Martini, P" uniqKey="De Martini P" first="P." last="De Martini">P. De Martini</name></region><name sortKey="Pantosti, D" sort="Pantosti, D" uniqKey="Pantosti D" first="D." last="Pantosti">D. Pantosti</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Bois/explor/CheneBelgiqueV2/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000958 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000958 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Bois
|area= CheneBelgiqueV2
|flux= Main
|étape= Exploration
|type= RBID
|clé= ISTEX:07078C9FE5CE0BFE09DEA93957FD64EDBE30330C
|texte= Paleoseismologic investigation of the fault rupture of the 14 April 1928 Chirpan earthquake (M 6.8), southern Bulgaria
}}
| This area was generated with Dilib version V0.6.27. |  |