The basis of the criteria adopted model of spatial correlation of geological formations and the crumple zones, identified by geophysical characteristics. For the construction of the deformation zones studied statistics of the spatial distribution of geophysical magnetic and gravitational fields of nature. In statistics azimuth anomalies identified seven systems highs in mutually orthogonal directions. Highlighted areas of increased density anomalies of geophysical fields associated to processes of deformation of the crust. Found that the spatial density of the epicenters of earthquakes controlled systems anomalies of geophysical fields ( deformation zones ) in two azimuths . A formal comparison of the spatial position of the geological formations with predominance of giving zones of geophysical anomalies shows the association of density gradients of earthquakes to geological contacts of rocks of different ages. Application of GIS MapInfo revealed the relationship between seismicity and features of geological-structural and tectonic plan of the territory
MapInfo GIS, geological formations, geophysical fields, earthquake.
ГЕОГРАФИЯ И ГЕОЛОГИЯ
УДК 550.34.01+004
ИЗУЧЕНИЕ геологическИХ КРИТЕРИЕВ СЕЙСМИЧНОСТИ ПО СТАТИСТИКЕ ПРОСТРАНСТВЕННЫХ АНОМАЛИЙ
ГЕОФИЗИЧЕСКОЙСРЕДЫВГИС MAPINFO
STUDY geological criteria seismicity Statistical spatial anomalies in the geophysical environment GIS MAPINFO
Иванова Н.А., преподаватель
Технический институт (филиал) СВФУ им. М.К. Аммосова
Россия, г. Нерюнгри
DOI: 10.12737/6819
Аннотация: Для построения деформационных зон изучена статистика пространственного распределения геофизических полей магнитной и гравитационной природы. В статистике азимутов аномалий выделены семь систем максимумов во взаимно ортогональных направлениях. Выделенные зоны увеличенной плотности аномалий геофизических полей ассоциированы с процессами деформации земной коры. Установлено, что пространственная плотность эпицентров землетрясений контролируется системами аномалий геофизических полей (деформационными зонами) в двух азимутах. Формальное сравнение пространственного положения геологических формаций с преобладающими зонами геофизических аномалий показывает приуроченность градиентов плотности очагов землетрясений к геологическим контактам горных пород различного возраста. Применение ГИС MapInfo позволило выявить взаимосвязи сейсмичности с особенностями геолого-структурного и тектонического плана территории.
Summary:The basis of the criteria adopted model of spatial correlation of geological formations and the crumple zones, identified by geophysical characteristics. For the construction of the deformation zones studied statistics of the spatial distribution of geophysical magnetic and gravitational fields of nature. In statistics azimuth anomalies identified seven systems highs in mutually orthogonal directions. Highlighted areas of increased density anomalies of geophysical fields associated to processes of deformation of the crust. Found that the spatial density of the epicenters of earthquakes controlled systems anomalies of geophysical fields ( deformation zones ) in two azimuths . A formal comparison of the spatial position of the geological formations with predominance of giving zones of geophysical anomalies shows the association of density gradients of earthquakes to geological contacts of rocks of different ages. Application of GIS MapInfo revealed the relationship between seismicity and features of geological-structural and tectonic plan of the territory
1. Stativa A.S., Trofimenko S.V. Metodika i tekhnologiya vydeleniya sistem razlomov Aldanskogo shchita //Gornyy informatsionno-analiticheskiy byulleten´ (nauchno-tekhnicheskiy zhurnal). 2006. T. 17. №3. S. 155-166.
2. Stativa A.S., Trofimenko S.V. Postroenie sistem razlomov Aldanskogo shchita po geofizicheskim dannym //Gornyy informatsionno-analiticheskiy byulleten´ (nauchno-tekhnicheskiy zhurnal). 2006. T. 17. №3. S. 193-198.
3. Stativa A.S., Trofimenko S.V. Ortogonal´nye sistemy razlomov Aldanskogo shchita i ikh geologicheskaya pozitsiya //Gornyy informatsionno-analiticheskiy byulleten´ (nauchno-tekhnicheskiy zhurnal). 2006. T. 17. №4. S. 178-188.
4. Stativa A.S., Trofimenko S.V., Imaev V.S. Prostranstvennoe raspredelenie indikatorov sistem razlomov Aldanskogo shchita //Gornyy informatsionno-analiticheskiy byulleten´ (nauchno-tekhnicheskiy zhurnal). 2006. T. 17. №4. S. 188-197.
5. Trofimenko S. V. Tektonicheskaya interpretatsiya statisticheskoy modeli raspredeleniy azimutov anomaliy gravimagnitnykh poley Aldanskogo shchita. - Tikhookeanskaya geologiya. - 2010. - Tom 29. - №3. - S. 64-77.
6. Ovsyuchenko A.N., Trofimenko S.V., Marakhanov A.V. i dr. Detal´nye geologo-geofizicheskie issledovaniya zon aktivnykh razlomov i seysmicheskaya opasnost´ Yuzhno-Yakutskogo regiona //Tikhookeanskaya geologiya, 2009. - tom 28. - №4. - S. 55-74.
7. Ovsyuchenko A.N., Trofimenko S.V., Marakhanov A.V. i dr. Ochagovye zony sil´nykh zemletryaseniy Yuzhnoy Yakutii //Fizika Zemli. 2009. №2. S. 15-33.
8. Ovsyuchenko A.N., Trofimenko S.V., Marakhanov A.V. i dr. Seysmotektonika perekhodnoy oblasti ot Baykal´skoy riftovoy zony k orogennomu podnyatiyu Stanovogo khrebta //Geotektonika. 2010. № 1. S. 29-51.
9. Karasev P.S., Ovsyuchenko A.N., Marakhanov A.V., Trofimenko S.V. Aktivnye nektonicheskie narusheniya uchastka Aldan-Nagornyy nefteprovodnoy sistemy Vostochnaya Sibir´ - Tikhiy okean //Neftyanoe khozyaystvo. 2008. № 9. -S. 80-84.
