Isla San Roque MX
Isla San Roque - Image
(N-11-25_2000) 
Isla San Roque - Map Isla San Roque is reported to have little to no vegetation. It does have a significant bird population (Black-vented Shearwater). The Mexican government (CIPAMEX) has the island listed as an area to protect. The island is 2-kms off of Baja's west coast. The size is 1200-m long by 400-m wide.
This island is part of the El Vizcaino Biosphere Reserve which encompasses more than 2.5 million hectares of park land. Great information about this park can be found at Parks Watch web site.
A concern when digitizing off-shore rocks is their blurry appearance when using Landsat ETM+ 2000 imagery. These off-shore features precise shapes are difficult to accurately depict. I typically digitize at between 1-10,000 m to 1:7,500 m when I attempt to resolve off-shore rocks. The determination of shoreline separation vs shadows is difficult to consistently resolve. My strategy is to visually determine separation. If I see separation, I digitize an off-shore rock. If I feel separation is questionable, I digitize a peninsula.
OC: Pacific
A concern when digitizing off-shore rocks is their blurry appearance when using Landsat ETM+ 2000 imagery. These off-shore features precise shapes are difficult to accurately depict. I typically digitize at between 1-10,000 m to 1:7,500 m when I attempt to resolve off-shore rocks. The determination of shoreline separation vs shadows is difficult to consistently resolve. My strategy is to visually determine separation. If I see separation, I digitize an off-shore rock. If I feel separation is questionable, I digitize a peninsula.
