gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2023-14-5-0721gtcrust-1744Research ArticleТЕКТОНОФИЗИКАTECTONOPHYSICSПАДЕНИЕ ОТНОСИТЕЛЬНОГО УРОВНЯ МОРЕЙ В МАКСИМУМ ПОСЛЕДНЕГО ОЛЕДЕНЕНИЯ И РОЛЬ НИЖНИХ СЛОЕВ МАНТИИ В ПРОЯВЛЕНИИ ЭФФЕКТА ГИДРОИЗОСТАЗИИFALL OF RELATIVE SEA LEVELS DURING THE LGM AND THE ROLE OF THE LOWER MANTLE LAYERS IN MANIFESTATION OF THE EFFECT OF HYDROISOSTASYБулгаковР. Ф.BulgakovR. F.

693022, Южно-Сахалинск, ул. Науки, 1Б

1B Nauki St, Yuzhno-Sakhalinsk 693022

r.bulgakov@imgg.ruИнститут морской геологии и геофизики ДВО РАНРоссияInstitute of Marine Geology and Geophysics, Far Eastern Branch of the Russian Academy of SciencesRussian Federation202317102023145721721Copyright © Булгаков Р.Ф., 20232023Булгаков Р.Ф.Bulgakov R.F.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.gt-crust.ru/jour/article/view/1744

Строение и функционирование геосистем прибрежных районов зависят от взаимодействия экзогенных и эндогенных факторов. Результаты такого взаимодействия способны негативно влиять как на экологическую ситуацию, так и на хозяйственную деятельность. Гидроизостазия как одно из следствий изменения уровня моря при смене оледенений на межледниковья и вызванного этим последующего изменения нагружения твердой поверхности Земли влияет на напряженно-деформированные состояния недр. До недавних пор для российских прибрежных регионов изучение роли гидроизостазии не было в достаточной степени вовлечено в исследовательскую активность. В данной работе уделяется особое внимание двум аспектам, обуславливающим гидроизостазию: понижению уровня Мирового океана приблизительно на 120 м в максимум последнего ледникового периода около 20 тыс. лет назад и вовлечению слоев нижней мантии Земли в деформации и дислокации, сопровождающие такое изменение уровня морей.

The structure and functioning of coastal geosystems depend on the interaction of exogenous and endogenous factors. The results of such interaction can dramatically affect both the ecological situation and economic activity. Hydroisostasis, as one of the consequences of the change of sea level during glacial-to-interglacial changes and the resulting change in the solid earth’s surface loading, affects the stress-strain state of the interior part of the earth. Until recently, the study of the role of hydroisostasis for the Russian coastal regions was not sufficiently involved in research activity. In this work, special attention is paid to two aspects that cause and accompany hydroisostasis: a decrease in the level of the World Ocean by about 120 meters during the last glacial maximum about 20 thousand years ago and involvement of layers of the lower mantle in its accompanying deformations and displacements.

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The authors declare that there are no conflicts of interest present.