Geological Hazard Potential at the Baltic Sea and Its Coastal Zone: Examples from the Eastern Gulf of Finland and the Kaliningrad Area - The Baltic Sea Basin - page 356

16.6 General Classification of Geological Hazard Potential
of the Eastern Gulf of Finland and the Kaliningrad Area

The results of the geological hazard potential study are summarized in the maps
(Figs. 16.2 and 16.3 ) . The analysis of interaction of natural and anthropogenic
hazard potential allows estimating three levels of risk (low, medium, and high).
Presented maps show that the highest level of risk corresponds mostly to the coastal
zones. In the eastern Gulf of Finland, the risk level is higher in the easternmost, high
populated area with developed industry.
Resulting classification of endogenic and exogenic hazard potential for the
Russian Baltic and its coastal zone, based on the same principles, was devel-
oped on the basis of expert estimation and is shown in Tables 16.2 , 16.3 , 16.4 ,
and 16.5 .

Table 16.2 Endogenic geological hazard potentials for the coastal zone of the Russian Baltic

Technogenic activity Level of hazard potential

Geological
processes and
phenomena

New
coastal
territories

Communications,
transport

Hydrotechnical
constructions

Kaliningrad
district

Eastern Gulf
of Finland

Construction

Earthquakes + + + + Medium Low

Vertical tectonic
movements
along
tectonic
faults

+ - - + Medium Medium

Gas flow + - - - Low Medium

Table 16.3 Endogenic geological hazard potentials for the sea bottom of the Russian Baltic

Anthropogenic activity Level of hazard potential

Geological
processes and
phenomena

Marine
transport,
fishing

Oil and gas
pipelines,
cables

Sand and
gravel
exploration

Eastern
Gulf of
Finland

Dredging,
dumping

Kaliningrad
district

Earthquakes - + - - Medium Low

Vertical tectonic
movements
along
tectonic
faults

- + + - Medium Medium

Pockmarks - + - - Low Low