CD Contents, for openfile 5397, The Bras d’Or Lakes. This CD contains: 1.) A_Readme (folder) that contains the files; ABOUT.doc, citation.doc, INSTRUCTIONS.pdf, licence_e.doc, and Open File disclaimer.doc. 2.) Adobe Reader (folder) 3.) ArcReader.zip, (file) 4.) Brasdor_ArcGIS_Project.zip, (file) 5.) Brasdor-Coastline-Sensitivity.pdf, (file) =============================================== 1. A_Readme (folder) (a) ABOUT.doc, which summarizes the contents of this CD along with the types of map data found in the ArcGIS project; (b) citation.doc; (c) INSTRUCTIONS.pdf which describes computer requirements and how to install and use ArcReader and the Bras d'Or Lakes ArcGIS Project; (d) licence_e.doc; (e) Open File disclaimer.doc 2. Adobe Reader (folder) containing the Adobe Reader 7.0.8 3. An ArcReader.zip file containing the ArcReader 9.0 free GIS viewer; 4. A Brasdor_ArcGIS_Project.zip file containing various folders of map data for the Bras d'Or Lakes ArcGIS project; 5. Brasdor-Coastline-Sensitivity.pdf, a report from the Geological Survey of Canada (Atlantic) detailing the response of the coasts of the Bras d'Or Lakes to sea-level rise. ArcReader The ArcReader.zip file contains the free GIS viewer from ESRI, which can be used to view and find out information about the different map layers present in the Bras d'Or Lakes GIS project. See the included file INSTRUC- TIONS.pdf for instructions on the installation and use of ArcReader. ArcReader will allow the user to view different maps; turn maps on and of; overlay different map layers simultaneously; measure distance between map objects; pan and zoom the display; and query the attributes (re: char- acteristics) of different map objects. Bras d'Or Lakes Map Data The BrasdOr_ArcGIS_Project.zip file on this CD contains an ArcGIS project for use in Arc Reader. See the file INSTRUCTIONS.pdf on this CD for more information about running and installing the ArcGIS project. This CD also contains a report from the Geological Survey of Canada (Atlantic) called Brasdor-Coastline-Sensitivity.pdf which details the effects of sea-level rise on past, present, and future seafoor and coastal characteristics. The following is a brief description of the types of data that can be viewed in the Bras d'Or Lakes ArcGIS project: • A classification of Bras d'Or Lakes coastline with hyperlinks to coastal photographs and shoreline monitoring sites. The coastline has been subdivided into eleven shore types. Aerial and ground photographs of the shore types can be accessed through hyperlinks. • Sun-illuminated seafloor topography of the lakes. This georeferenced image is based on multibeam bathymetric sonar surveys. Sea foor depth is depicted according by a 'rainbow' colour scheme, with shal- lowest areas coloured red and deepest areas violet. • Backscatter strength for the lakes. Backscatter represents the percent- age of the outgoing multibeam sonar signal that returns to the receiver on the ship. It is a proxy for seafloor texture: high backscatter in the Bras d'Or Lakes (indigo colour) is mostly gravel, and low backscatter (pale gray) is mud. In this image the coloured backscatter has been draped over a gray version of the seafloor topography, in order to better convey the relationships between seafloor texture and morphology. • A map of the Bras d'Or Lakes during the early Holocene (approxi- mately 10,000 B.P.). This is an approximation of the shoreline position of the lakes in the early Holocene, when the lake level was at -25 m. The lake level in the southern lakes was slightly higher, perhaps -24 m, but this small difference is not shown. • Survey data. The project contains information from Geological Sur- vey of Canada marine surveys in the lakes, including: ship's tracks, sediment sample locations (cores, grabs, cameras, and video) together with hyperlinks to the photographs taken at the camera stations. Ships tracks are further broken down into tracks for the various geophysical systems (sidescan sonar, Seistec sub-bottom profiler, etc.). • Hyperlinks. These links connect with coastal photographs and seafoor photographs and shoreline monitoring sites.