Jacek Kaczmarzyk

Articles

Overbank sediments along the middle Wieprza as a record of flood phenomena

Jacek Kaczmarzyk, Wacław Florek

Geographia Polonica (2010) vol. 83, iss. 1, pp. 13-24 | Full text
doi: https://doi.org/GPol.2010.1.2

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Abstract:

Today’s fl ood events along the River Wieprza assume a quite characteristic course entailingcalm spillovers of water from the bed in places of riverbank lowering and in sections above andbelow bridges, where a narrowing of the channel is present. The identity of the land inundated relatesto morphology, the near-channel part of a fl oodplain may be affected or those parts in depressions thatserve as fl ood basins.Riverbank exposures on both sides of the present river channel plus pits reveal the construction of theWieprza fl oodplain. The sediments that build the fl oodplain represent channel and overbank facieswith subfacies of palaeomeander fi lls. Analysed exposures are located along the valley section betweenSławsko and Staniewice, mostly in close proximity to the Early Mediaeval fortifi ed site ofWrześnica. The content of the exposures indicates that the uniform cover of overbank sedimentsacross the fl oodplain emerged during the last 1000 years. It is now impossible to say when exactly, soit is unknown what the rank of the extreme fl oods which took place at the end of 19th century was, andwhat their role in forming the present fl oodplain.

Keywords: paleomeanders, Holocene, overbank deposits, fl ood, fl oodplain, Medieval fortifi ed site, Wieprza river.

Jacek Kaczmarzyk, Department of Geomorphology and Quaternary Geology, Institute of Geograpghy and Regional Studies, Pomeranian University in Słupsk, Partyzantów 27, 76-200 Słupsk, Poland
Wacław Florek, Department of Geomorphology and Quaternary Geology, Institute of Geograpghy and Regional Studies, Pomeranian University in Słupsk, Partyzantów 27, 76-200 Słupsk, Poland

Dynamics of the Polish coast east of Ustka

Wacław Florek, Jacek Kaczmarzyk, Marek Majewski

Geographia Polonica (2010) vol. 83, iss. 1, pp. 51-60 | Full text
doi: https://doi.org/GPol.2010.1.5

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Abstract:

The objective of the investigation presented here has been to verify schemes for the developmentof cliff coasts proposed earlier by Subotowicz (1982). This is i.a. justifi ed by observationssuggesting greater differentiation to the geological structure and consequent hydrogeological characteristicsof the Southern Baltic cliffs than had been assumed by the authors of earlier works. Themeasurement data for the investigated profi les yielded by the work to date show that:

  • the most dynamic zone on the coast is the beach,
  • clifftops are the parts least resistant to destruction,
  • the strong storms of late autumn 2004 and the 2005/06 and 2006/07 seasons proved capable of activatingthe cliffs at nine of the ten investigated profi les, though no relationship was found betweenthe lithology of the sediments building the cliffs and rates of erosion.

Keywords: coastal zone, cliff, Southern Baltic, extreme storms, erosion.

Wacław Florek, Department of Geomorphology and Quaternary Geology, Institute of Geograpghy and Regional Studies, Pomeranian University in Słupsk, Partyzantów 27, 76-200 Słupsk, Poland
Jacek Kaczmarzyk, Department of Geomorphology and Quaternary Geology, Institute of Geograpghy and Regional Studies, Pomeranian University in Słupsk, Partyzantów 27, 76-200 Słupsk, Poland