Girjatowicz, J.P., 2019. Characterization of grounded ice hummocks found in coastal lagoons of the southern Baltic Sea. Journal of Coastal Research, 35(6), 1250–1259. Coconut Creek (Florida), ISSN 0749-0208.

This paper presents the topography, structure, and morphology of grounded ice hummocks found in Szczecin Lagoon and Vistula Lagoon on the basis of ice drilling data collected in the field between 1995 and 2017. Twenty-two ice-hummock cross-sections are presented, and seven morphometric parameters are discussed. Mean values for these parameters are: height, 3 m; width, 15 m; slope lengths, 11 m for the windward and 6 m for the leeward slopes, with 20° and 30° angles, respectively. The windward slope of the hummock is concave, and becomes steeper closer to the summit, which often bears a vertical sheet of ice. The leeward slope is usually characterized by a uniform inclination dependent on the angle of natural slip for brash ice. Statistical relationships between ice-hummock parameters are mostly statistically significant, with high correlation coefficients, usually exceeding 0.50.