Advances in Bergen Echo Integrator

The Bergen Echo Integrator (BEI) is a software system designed for convenient postprocessing of echo sounder data. BEI is realized in international standards and is essentially machine independent. Development of BEI for analysis of such diverse scatterers as plankton, pelagic fish, boUom fish and bouom itself is reviewed. The system design is described and the latest advances are discussed. Among these: a more flexible database, an improved man-machine interface, an easier procedure for accessing data and a system for mapping the data. General operating procedures are described for extraction of information while scrutinizing acoustical data.