{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T13:14:11Z","timestamp":1747228451349,"version":"3.40.5"},"reference-count":0,"publisher":"Geological Institute, Bulgarian Academy of Sciences","issue":"1-2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["GeolBalc"],"published-print":{"date-parts":[[2001,6,30]]},"abstract":"<jats:p>The seismotectonic characteristics determined for the West periphery of Rhodope Mountain show that it is an area with a considerable seismicity which caused very strong effects on both people and environment. The present investigation concerns the most hazard earthquake zone on the Bulgarian territory well-known as Struma (or Kresna-Kroupnik) zone. The strongest earthquake in SE Europe occurred on April 4, 1904. Its magnitude is estimated at 7.8 and intensity between X and VIII. On the fault surface, traces of tectonic movements (slickensides) are still preserved. The analysis of these slickensides has shown that they are connected with the evolution of the faulting process during the last seismic events in the epicentral zone of the Kroupnik Earthquake. They give a good possibility for a reconstruction of the tectonic stress field, acting when the main seismic events occurred. 2D model of the local stress field distribution around the faults in SW Bulgaria has been made on the base of the common analysis of the active faults and the regional stress field orientation trough the Method of Boundary Elements. As an important conclusion for the concerned area it could be pointed out that the concentrations of seismic events are closely related to the local stress field anomalies. Following the remaining traces of the surface rupturing along Kroupnik fault it was located the most probable terrain near the contemporary river bed, where a barraging took place caused by Kroupnik Earthquake. Vertical electrical sounding was performed using 4-etectrodes Shlumberger array for detecting traces of the rupturing under the alluvium cover. The clear difference between the VES curves type permits to postulate the existence of two steps of normal faulting.<\/jats:p>","DOI":"10.52321\/geolbalc.31.1-2.53","type":"journal-article","created":{"date-parts":[[2023,1,13]],"date-time":"2023-01-13T20:34:14Z","timestamp":1673642054000},"page":"53-66","source":"Crossref","is-referenced-by-count":4,"title":["Seismotectonic characteristics of the western periphery of the Rhodope Mountain region"],"prefix":"10.52321","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2387-2867","authenticated-orcid":false,"given":"Stefan","family":"Shanov","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kuncho","family":"Kurtev","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gabriel","family":"Nikolov","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antoaneta","family":"Boykova","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Boyko","family":"Rangelov","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"29796","container-title":["Geologica Balcanica"],"original-title":[],"deposited":{"date-parts":[[2023,1,13]],"date-time":"2023-01-13T20:34:19Z","timestamp":1673642059000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.geologica-balcanica.eu\/journal\/31\/1-2\/pp.-53-66"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2001,6,30]]},"references-count":0,"journal-issue":{"issue":"1-2","published-print":{"date-parts":[[2001,6,30]]}},"URL":"https:\/\/doi.org\/10.52321\/geolbalc.31.1-2.53","relation":{},"ISSN":["0324-0894","2535-1060"],"issn-type":[{"type":"print","value":"0324-0894"},{"type":"electronic","value":"2535-1060"}],"subject":[],"published":{"date-parts":[[2001,6,30]]}}}