Mapping Presentations

Through many years of experience of working with our clients Watson Company, Inc. has developed advanced data products that present survey data in concise and straight forward formats that maximize the usefulness of the data. Below are descriptions and examples of the products.

GIS Feature Charts can present information based on data interpretations from the sub-bottom data, side scan sonar,  bathymetry, and regional information gleaned from other sources for the area. Sub-bottom and seafloor information is classified based on reflectivity characteristics, water depth, seafloor gradient, and information obtained from geotechnical sampling. Features such as ridges, scarps, ice gouging, active bed forms, biological habitats  can be indicated on the charts. Features of particular importance to the client are highlighted and mapped.  The locations of existing shoreline and planned structures are shown on the charts when possible. Data can be shown in multiple formats. The symbols used on these charts are typically denoted on the map legend.

ArcView presentation of integrated data sets from side scan sonar and multi-beam sonar interpretations

Geophysical Data Integration of multiple data sets assists the client in reviewing site conditions for large or complex survey areas. The chart layout has multiple strips of different types of data, such as bathymetry, seafloor material types and sub-bottom data. Each data set is laid out across the page and indexed geographically to the data set below it on the page,  in a series of panels.  The organization of the panels typically has the bathymetry on top with the track line information. The second panel includes information from seabed data including seafloor features and seafloor reflectivity gleaned from the side scan sonar data. Surficial features such as ice gouging and anomalous features from the seismic data are also generally included on the second panel. The third panel includes a profile interpretation of geologic stratigraphic reflectors from the sub-bottom data, and an integrated bathymetric profile.

Example of Geophysical Data Integration - 3-Panel Display

Integration of Sub-bottom data with Borehole data. This technique is important for engineers in correlating sub-bottom data with borehole data.

Geophysical Data Interpretations utilized to delineate Borehole Drilling Locations

Borehole Information provided by Duane Miller & Associates

Bathymetry Charts

All depth contours and are corrected for sound speed variations in the water column and reduced to the local tidal datum. The bathymetric contour intervals are dictated by bathymetric coverage.

Watson Company Inc.  processing and data presentation can generally provide clients with survey results in customized formats both on paper and on digital media. Digital versions of all reports are available as Adobe Acrobat .pdf files and Excel files. Charts are available as AutoCad .dxf .dwg, ArcView *.shp and Adobe Acrobat .pdf files.

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