NEFSC Survey 1997

The Ocean Biogeographic Information System - Spatial Ecological Analysis of Megavertabrate Populations (OBIS-SEAMAP) is a spatially referenced database of data related to marine mammals, birds and turtles. This project is one of several nodes comprising the Ocean Biogeographic Information System (OBIS). SUPPLEMENTAL INFORMATION: Data correction 03/08/06 Humback whale was mistakenly linked to Balaenidae (180531). It is now linked to Megaptera novaeangliae (180530). In addition to the sighting data, effort data was recorded every half hour or whenever conditions change. This dataset, therefore, should be used with the effort data. CURRENTNESS REFERENCE: ground condition SPATIAL REFERENCE INFORMATION - GEODETIC MODEL Horizontal Datum Name: D_WGS_1984 Ellipsoid Name: WGS_1984 Semi-major Axis: 6378137.000000 Denominator of Flattening Ratio: 298.257224