Spatial variations of the hummocks keel draft in the Laptev Sea area

• Published in: Ciencia en Desarrollo
• Main Authors: A. K. Naumov, E. A. Skutina, D. O. Yakimushkin, А. К. Наумов, Е. А. Скутина, Д. О. Якимушкин
• Other Authors: Работы выполнены в рамках договоров № 100015/05937Д, № 100016/04690Д, № 100017/05003Д между ФГБУ «ААНИИ» и ОАО «НК «Рос- нефть» в 2015–2017 гг., а также договора № 04-2019ПР ФГБУ «ААНИИ» и ООО «Арктический Научный Центр» в 2019 г. в рамках проекта «Проведение гидрометеорологических исследований на шельфе морей Карского и Лаптевых».
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: Государственный научный центр Российской Федерации Арктический и антарктический научно-исследовательский институт 2022
• Subjects: торосистое образование; hummock; ice cover; ice draft; ice ridge; Laptev Sea; ледяной покров; море Лаптевых; осадка льда; торос; Arctic; laptev
• Online Access: https://www.aaresearch.science/jour/article/view/473; https://doi.org/10.30758/0555-2648-2022-68-4-332-351

The article investigates the morphometric features of the ice cover lower surface in the Laptev Sea area. The main attention is paid to the study of the hummocked formations’ keel draft and the spatial variability of this quantity. The data for the research were obtained during several ice seasons (from two to four) in the period 2014-2019 using upward-looking sonars, which were part of the submerged autonomous buoy stations (SABS). The stations were installed at five points in the Laptev Sea area. The data obtained from a series of observations of the ice cover draft allowed extracting information on the hummocked formations’ keel draft at separate points of the sea area. As a result, samples of values of the hummocks keel draft were formed for separate ice seasons for each of the five stations. Further, a statistical processing of the data obtained was performed. In particular, for each of the ice seasons we checked the homogeneity of the mean values and of the distribution of samples by stations. Also checked was the distribution matching. A comparative data analysis using methods of mathematical statistics made it possible to describe the spatial variability of the hummocked formations’ keel draft in the Laptev Sea area for separate ice seasons. The “key” points (stations) describing the spatial variability of the hummocked formations’ keel draft for all the ice seasons considered were determined according to the results of the analysis performed, which allows planning further ice draft research using SABS, if required (to determine the necessary number of stations and points of their installation). Настоящая статья посвящена изучению морфометрических особенностей нижней поверхности ледяного покрова на акватории моря Лаптевых. Основное внимание уделено изучению осадки килей торосистых образований и пространственной изменчивости этой величины.Для проведения исследования использованы данные, полученные в течение нескольких (от двух до четырех) ледовых сезонов в период с 2014 по 2019 г. с помощью ...