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Mosty na rzece Skawie

Groza K.

Geoinżynieria : drogi, mosty, tunele

2010

nr 2

46-47

Acoustical techniques of underwater meadow monitoring in the Puck Buy (Southern Baltic Sea)

Klusek Z., Gorska N., Tęgowski J., Groza K., Faghani D., Gajewski L., Nowak J., Kruk-Dowgiałło L., Opioła R.

Hydroacoustics

2003

Vol. 6

79--90

The main motivation of this paper was to develop acoustical techniques to monitor underwater meadows. The data, collected with down-looking echo sounder, were used to develop method of bottom detection and tracking and measurement of vegetation canopy height in the Puck Bay. This method and its accuracy are discussed in details. The other possibilities of recognition between covered and uncovered bottom were also reviewed. The effectiveness of using side scan sonar in study vegetation spatial distribution is demonstrated.

An Autonomous Hydroacoustic System for studying long-term scattering variability

Szczucka J., Groza K., Poraziński K.

Oceanologia

2002

No. 44 (1)

111-122

A new instrument, an Autonomous Hydroacoustic System, was designed to probe a water column acoustically from the bottom to the sea surface. It is capable of operating from a depth of 100 m self sufficiently for up to 10 days. A brief description of its construction and electronic design is provided. Preliminary results from the first field study consisting of a 90-hour series of backscattering measurements are presented.