Grain size analysis of bottom sediments from lower sector of Danube River (Corabia, Bechet, Pisculeț-Desa, Golenți-Cetate sectors), 2022 – PN 19 20 02 04, National Project

The dataset comprises grain size analysis data of bottom sediments from the lower sector of the Danube River. The data were collected during two research cruises conducted between June 3 - June 20, 2022 and September 23 - October 3, 2022, as part of the national project “Development of an Integrated Management Framework for Pilot Areas in the Romanian Sector of the Danube River, Influenced by Climate Change and Anthropogenic Interventions, through the Application of Advanced Investigation Methodologies (Geophysical, Remote Sensing, Sedimentological, Morphological, Biological)” (PN 19 20 02 04). A total of 78 sediment samples were collected during the first expedition and 78 during the second, from four Danube sectors: Downstream Corabia (Km 626–631), Bechet (Km 674–678), Pisculeț–Desa (Km 760–765), and Golenți–Cetate (Km 805–811). Sampling was performed using a Van Veen grab by the GeoEcoMar research team. The dataset aims to support the characterization of sediment texture and the evaluation of spatial and temporal variability of bottom sediments in this section of the Danube River.本数据集涵盖多瑙河下游河段底沉积物的粒度分析数据。相关数据采集于2022年6月3日至6月20日、2022年9月23日至10月3日开展的两次科考航次，系国家项目“基于先进调查方法（地球物理、遥感、沉积学、地貌学、生物学）应用，构建受气候变化与人为干预影响的多瑙河罗马尼亚河段试点区域综合管理框架”（PN 19 20 02 04）的研究内容之一。 两次科考航次分别采集沉积物样品78份，采样区域涵盖多瑙河四段：科拉比亚下游（里程626–631千米）、贝谢特（里程674–678千米）、皮斯库莱茨-德萨（里程760–765千米）以及戈伦茨-切塔泰（里程805–811千米）。采样工作由GeoEcoMar研究团队采用范维恩采泥器（Van Veen grab）完成。本数据集旨在支撑多瑙河该河段沉积物的质地特征表征，以及底沉积物时空变异性的评估工作。