Морфометричний аналіз підводного рельєфу в районі української антарктичної станції «Академік Вернадський» як основа для оцінки умов осадконакопичення
Альтернативна назва
Morphometric analysis of the submarine relief in the area of the Ukrainian Antarctic Station “Akademik Vernadsky” as a basis for assessment of sedimentation conditions
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Дата
2025
Науковий керівник
Укладач
Редактор
Назва журналу
ISSN
2303-9914
E-ISSN
2415-315X
Назва тому
Видавець
Одеський національний університет імені І. І. Мечникова
Анотація
У роботі представлені результати морфометричного аналізу підводного рельєфу в районі Української антарктичної станції «Академік Вернадський». Дані, отримані під час Українських Антарктичних морських експедицій 2022–2025 років на цій території, роблять можливим проведення таких досліджень з високим ступенем детальності. За допомогою морфометричного аналізу цифрової моделі рельєфу визначено особливості сучасного осадконакопичення та виявлено ділянки ймовірного накопичення верхньоплейстоцен – голоценових відкладів в акваторії Антарктичного півострова (район Української антарктичної станції «Академік Вернадський»).
Problem Statement and Purpose. The morphology of the seafloor is one of the key factors determining the spatial distribution and intensity of sedimentation. Therefore, morphometric analysis of the submarine relief in the area of the Ukrainian Antarctic Station “Akademik Vernadsky” provides a necessary basis for an accurate assessment of the present-day marine sedimentation conditions in this region and for the reconstruction of sedimentary environments during the Late Pleistocene–Holocene. The aim of this work is to identify the characteristics of modern sedimentation using morphometric analysis and to detect areas of probable accumulation of Upper Pleistocene–Holocene deposits in the marine area of the Antarctic Peninsula (in the vicinity of the Ukrainian Antarctic Station “Akademik Vernadsky”). Data & Methods. The research was carried out using bathymetric nautical maps of the Akademik Vernadsky Station area at scales ranging from 1:50 000 to 1:15 000, as well as depth measurements obtained with a Lowrance Elite-7 Ti2 echo sounder-chartplotter from aboard the “Zodiac” vessel during the Ukrainian Antarctic Marine Expedition in 2022, conducted in the coastal waters of the Antarctic Peninsula near the Ukrainian Antarctic Station “Akademik Vernadsky”. The analysis of the modern seafloor topography was performed using the morphometric method, which involves the application of spatial analysis technologies. The construction of the digital elevation model (DEM), its processing, and visualization of the obtained results were carried out using Esri ArcGIS software, with the involvement of the SAGA GIS (System for Automated Geoscientific Analyses) package. Results. The seafloor relief of the Antarctic Peninsula in the area of the Ukrainian Antarctic Station “Akademik Vernadsky” is characterized by a complex morphology. A detailed analysis of the submarine topography was carried out, including the calculation of key morphometric parameters and indices–slope and aspect, profile and plan curvature, convergence index, flow accumulation, closed depressions, and topographic position index–the spatial distribution of which is presented as a series of thematic maps. This approach made it possible to identify the most probable zones of sediment accumulation, sediment transit, and denudation. The main denudation areas are the Argentine Islands and the surrounding submarine uplands, as well as the mountainous ridges of the Kyiv Peninsula. The greatest thickness of marine sediments is expected in the deepest parts of the Penola and French Straits, as well as in several depressions between the Penola Strait and the Kyiv Peninsula.
Problem Statement and Purpose. The morphology of the seafloor is one of the key factors determining the spatial distribution and intensity of sedimentation. Therefore, morphometric analysis of the submarine relief in the area of the Ukrainian Antarctic Station “Akademik Vernadsky” provides a necessary basis for an accurate assessment of the present-day marine sedimentation conditions in this region and for the reconstruction of sedimentary environments during the Late Pleistocene–Holocene. The aim of this work is to identify the characteristics of modern sedimentation using morphometric analysis and to detect areas of probable accumulation of Upper Pleistocene–Holocene deposits in the marine area of the Antarctic Peninsula (in the vicinity of the Ukrainian Antarctic Station “Akademik Vernadsky”). Data & Methods. The research was carried out using bathymetric nautical maps of the Akademik Vernadsky Station area at scales ranging from 1:50 000 to 1:15 000, as well as depth measurements obtained with a Lowrance Elite-7 Ti2 echo sounder-chartplotter from aboard the “Zodiac” vessel during the Ukrainian Antarctic Marine Expedition in 2022, conducted in the coastal waters of the Antarctic Peninsula near the Ukrainian Antarctic Station “Akademik Vernadsky”. The analysis of the modern seafloor topography was performed using the morphometric method, which involves the application of spatial analysis technologies. The construction of the digital elevation model (DEM), its processing, and visualization of the obtained results were carried out using Esri ArcGIS software, with the involvement of the SAGA GIS (System for Automated Geoscientific Analyses) package. Results. The seafloor relief of the Antarctic Peninsula in the area of the Ukrainian Antarctic Station “Akademik Vernadsky” is characterized by a complex morphology. A detailed analysis of the submarine topography was carried out, including the calculation of key morphometric parameters and indices–slope and aspect, profile and plan curvature, convergence index, flow accumulation, closed depressions, and topographic position index–the spatial distribution of which is presented as a series of thematic maps. This approach made it possible to identify the most probable zones of sediment accumulation, sediment transit, and denudation. The main denudation areas are the Argentine Islands and the surrounding submarine uplands, as well as the mountainous ridges of the Kyiv Peninsula. The greatest thickness of marine sediments is expected in the deepest parts of the Penola and French Straits, as well as in several depressions between the Penola Strait and the Kyiv Peninsula.
Опис
Ключові слова
осадконакопичення, цифрова модель рельєфу, морфометричний аналіз, Українська антарктична станція «Академік Вернадський», sediment accumulation, digital elevation model (DEM), morphometric analysis, Ukrainian Antarctic Station “Akademik Vernadsky”
Бібліографічний опис
Кузьменко О. Є. Морфометричний аналіз підводного рельєфу в районі української антарктичної станції «Академік Вернадський» як основа для оцінки умов осадконакопичення / О. Є. Кузьменко, С. В. Кадурін // Вісник Одеського національного університету. Географічні та геологічні науки. – 2025. – Т. 30, вип. 1(46). – С. 286–297.
УДК
551