Ice ridge evolution: Investigation in-situ and computer simulations

IF 1.5 4区地球科学 Q3 ECOLOGY

Polar Science Pub Date : 2024-03-01 DOI:10.1016/j.polar.2023.101041

Oleg Andreev, Victor Kharitonov

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引用次数: 0

Abstract

The article presents a two-dimensional three-layer non-stationary thermodynamic model allowing to calculate the annual variation (thermodynamic evolution) of the ice ridge using external meteorological and hydrological parameters as well as the information on the initial ice ridge porosity. For the test model simulation, the results of the study of morphometric characteristics of the ice ridge carried out in May-June 2011 and in April 2012 at « North Pole −38» and «North Pole −39» drifting stations were used. These studies were conducted using electric thermal drilling with computer recording of the penetration rate. Boreholes were drilled along the cross-section of the ridge crest at 0.5 m intervals. Cross-sectional profiles of ice ridge are illustrated. Applying the proposed model, it was possible to adequately reproduce the observed evolutionary changes in the main morphometric parameters (sail height, keel depth, thickness of the consolidated layer) of the investigated ice ridge.

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冰脊演变：现场调查和计算机模拟

文章介绍了一种二维三层非稳态热力学模型，可利用外部气象和水文参数以及初始冰脊孔隙度信息计算冰脊的年度变化（热力学演化）。在测试模型模拟中，使用了 1971 年在 Maykut 和 Untersteiner 以及 2012 年 4 月在 "北极-38 "和 "北极-38 "进行的冰脊形态特征研究结果。北极-38 "和 "北极-39 "漂流站的冰脊形态特征研究结果。这些研究采用了电热钻探技术，并用计算机记录了穿透率。钻孔以 0.5 米的间距沿着冰脊横截面进行钻探。冰脊横截面剖面图如图所示。应用所提出的模型，可以充分再现所观测到的冰脊主要形态参数（帆高、龙骨深度、固结层厚度）的演变变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polar Science ECOLOGY-GEOSCIENCES, MULTIDISCIPLINARY

CiteScore

3.90

自引率

5.60%

发文量

期刊介绍： Polar Science is an international, peer-reviewed quarterly journal. It is dedicated to publishing original research articles for sciences relating to the polar regions of the Earth and other planets. Polar Science aims to cover 15 disciplines which are listed below; they cover most aspects of physical sciences, geosciences and life sciences, together with engineering and social sciences. Articles should attract the interest of broad polar science communities, and not be limited to the interests of those who work under specific research subjects. Polar Science also has an Open Archive whereby published articles are made freely available from ScienceDirect after an embargo period of 24 months from the date of publication. - Space and upper atmosphere physics - Atmospheric science/climatology - Glaciology - Oceanography/sea ice studies - Geology/petrology - Solid earth geophysics/seismology - Marine Earth science - Geomorphology/Cenozoic-Quaternary geology - Meteoritics - Terrestrial biology - Marine biology - Animal ecology - Environment - Polar Engineering - Humanities and social sciences.