Characterization of suspended particles at different glacial bays at Spitsbergen

IF 2.6 3区地球科学 Q2 OCEANOGRAPHY

Oceanologia Pub Date : 2024-04-01 DOI:10.1016/j.oceano.2023.12.001

Katarzyna Dragańska-Deja

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引用次数: 0

Abstract

Particle size distribution (PSD) and concentration of mineral-suspended sediment released from melting glaciers are important factors affecting the local marine ecosystem, e.g. affecting the light availability in water columns, thus changing underwater light climate for photosynthetic organisms. We examined the characteristics of various samples of natural mineral assemblages suspended in different glacial bays in Hornsund and Kongsfjord at Spitsbergen. The concentrations of the total mass of particles (TSM) in suspended sediment as well as particular organic matter (POM) and particular inorganic matter mass (PIM) together with mineralogical composition and particular size distribution (PSD) were determined.

In this study, we investigated the PSD properties and variability in the front of different tidewater glaciers based, laser diffractometer measurements (LISST-100x), and XRD – techniques to obtain the mineralogical composition of the particles. The sampled sites are under the strong influence of freshwater discharge from the glacier. At each station, inorganic particulate matter contributed up to 98% to total suspended matter with the particle concentration of the particle reaches up to 111 mg/l with mean surface PSD slopes ranging from 3.24 to 3.85. The result provides valuable baseline information on the observed range of variability of the size of suspended particles due to glacial runoff and the presence of particles of different mineral origin in the glacial bays.

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斯匹次卑尔根不同冰川海湾悬浮颗粒的特征

冰川融化释放出的矿物悬浮沉积物的粒度分布（PSD）和浓度是影响当地海洋生态系统的重要因素，例如影响水柱中的光供应，从而改变光合生物的水下光气候。我们研究了悬浮在斯匹次卑尔根霍恩松和孔斯峡湾不同冰川海湾中的各种天然矿物组合样本的特征。在这项研究中，我们基于激光衍射仪测量（LISST-100x）和 XRD 技术，研究了不同潮水冰川前的 PSD 特性和可变性，以获得颗粒的矿物成分。采样点受到冰川淡水排放的强烈影响。在每个站点，无机颗粒物占总悬浮物的 98%，颗粒浓度高达 111 毫克/升，平均表面 PSD 坡度为 3.24 至 3.85。这一结果为观察冰川径流造成的悬浮颗粒大小变化范围以及冰川海湾中不同矿物来源颗粒的存在提供了宝贵的基准信息。

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

Oceanologia 地学-海洋学

CiteScore

5.30

自引率

6.90%

发文量

审稿时长

146 days

期刊介绍： Oceanologia is an international journal that publishes results of original research in the field of marine sciences with emphasis on the European seas.