Dataset on beach dynamics and beach-casts appearance at the Northern coast of the Sambia Peninsula, the Baltic Sea (Kaliningrad Oblast, Russia)

Kaliningrad Oblast, the westernmost region of Russia, suffers from coastal erosion (Łabuz et al., 2018). Sandy beaches are narrow, especially at the Northern shore of the Sambia Peninsula, where the rate of coastal retreat is about 0.5–1.5 m/year (Karmanov et al., 2018), the width of the beach (10–25 m in average) varies in time, the shore is partly protected by old groins (Prushak et al., 2014). The issue of the beach cast is linked to the problems of marine litter and microplastic pollution (Chubarenko I. et al., 2020) and seegrass dumping (Chubarenko B. et al., 2021). To monitor the dynamics of the beach and the release of beach casts on it, the webcam was installed at the northern shore of the Sambia Peninsula (Kaliningrad Oblast, Russia). Primary information (the raw images) is not presented in the database. The secondary data developed after the processing of images are presented in a tabular table, it contains several sheets. Sheet 1 (named "Beach-Cast_data") shows the presence or absence of beach and beach cast; it has 5 columns: Date (shooting date, format YYYY-MM-DD), BeachW (beach present/absent west of groin), BeachE (beach present/absent east of groin), CastW (beach cast present/absent west of groin), CastE (beach cast present/absent east of groin). The absence of the beach or beach cast is designated as "0". The presence of the beach or beach cast is designated as "1", but if the beach cast occupied more the 25% of study area, then it is indicated as "2". Sheet 2 (named "Cast_areas") shows the area occupied by beach cast within the boundaries of the study area; it has 5 columns: Date (shooting date, format YYYY-MM-DD), CastWest means beach cast west of groin and presented by two columns "area" (m2) and percentage ("%"), the CastEast means beach cast east of groin and presented by two columns "area" (m2) and percentage ("%"). Sheet 3 (named "Legend") shows legend described above. References: Chubarenko B., Woelfel J., Hofmann J., Aldag S., Beldowski J., Burlakovs J., Garrels T., Gorbunova J., Guizani S., Kupczyk A., Kotwicki L., Domnin D., Gajewska M., Hogland W., Kołecka K., Nielsen J., Schubert H. Converting beach wrack into a resource as a challenge for the Baltic Sea (an overview). (2021) Ocean & Coastal Management, 200, 105413. Chubarenko I., Esiukova E., Khatmullina L., Lobchuk O., Grave A., Kileso A., Haseler M. (2020) From macro to micro, from patchy to uniform: Analyzing plastic contamination along and across a sandy tide-less coast. Marine Pollution Bulletin, 156, 111198. Łabuz T.A., Grunewald R., Bobykina V., Chubarenko B., Česnulevičius A., Bautrėnas A., Morkūnaitė R., Tõnisson H. (2018) Coastal dunes of the Baltic Sea shores: a review. Quaestiones Geographicae, 37(1), 47-71. Prushak Z., Ostrovsky R., Babakov A.N., Chubarenko B.V. (2014) The main principles of bank stabilization by the groins. Russian Journal of Geomorpholgy, 14(3), 91-105.