Lake Bottom (Strata), Lake Victoria, Vector Point and polygon, ~2017

Lake Bottom (Strata), Lake Victoria, Vector Point, ~2017

Reference Information and Units:
Projected Coordinate System: Africa Lambert Conformal Conic
ESRI:102024 (epsg.io)
GCS: GCS_WGS_1984

File Naming Convention:
LV_Strata_Points_V1.shp

Data Origin:
Admiral Bathymetric Maps:
Description: British admiral bathymetry maps of the lake. Maps were scanned and georeferenced. Once georeferenced the points were digitized and the strata was recorded.
Points: Approximately 541
Year: 1990-1955

Grab Samples:
Description: Description: Points were taken to determine the strata of the lake by using a Simrad EK60 echo sounder. The points were read into Arc using X,Y coordinates
Points: Approximately 46
Year: 2009

Data Development:
Strata points were obtained using admiral bathymetry charts and points taken out in the field. The points from the admiral bathymetry charts were digitized. The points taken in the field were brought into ArcMap using X, Y coordinates. The strata was recorded for each point in the following fields “Strata1”, “Strata2”, “Strata3”, and “Stra_srce”. Field descriptions can be found below.

Field:
Z- Depth in Meters

Strata1- the strata type. Mud/Sand/Rock/Gravel/Humus
Example: m

Strata2- the texture of the strata type. Soft/Medium/Hard
Examples: sft

Strata3- the color of the strata. Black
Examples: blk

Stra_srce- source where the strata came from. Admiral Bathymetric Charts
Example: Admirality

Legend:
Please see the attached metadata PDF to view the Admiral Bathymetric Charts legend ArcGis, 10.3