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The north coast of Central Java often experiences floods annually caused by land use functions as riparian zone turned into industrial and residential areas. Flooding in Tuntang River can be categorized into upstream floods, local floods, and tidal floods. The study investigates flooding records in Tuntang River based on diatoms. A hundred sediment sample cores were collected from 2 sites, slicing within intervals of 10 cm. Diatom digestion using HCl and H2O2 10%. The discovery of marine diatom species in all layers indicates that the Tuntang River has experienced tidal flooding.
Falah et al. (Wed,) studied this question.