In my studies, I work with the internal dynamics of different snowpatches. In this study I wish to generate 3D models of snow patches. I have some problems when it comes to the actual work flow of creating this 3D model:
Data I have available are GPS points (x, y, and z values) over large parts of the research area (these points are collected by using a Real Time Kinematic GPS, on the surface of the snow patches) and GPR (ground penetrating radar) data, which tells me what's under the ground. For example, how deep is the ice, how thick are the snow layers, etc.
My thought is that I want to create a TIN from gps points using height values. The problem here is that I do not have GPS points for the whole research area, about 80% is covered.
Question 1: Are there any interpolation tools that can estimate the points where I do not have the point data, based on the points I already have?
When it comes to the actual 3D modeling, that I have a TIN of the glacier, but will now set the GPR data.
Question 2: Would it be best to create eg. three shapefiles one for ice, one for snow and one for firn? Then put different base heights on these files according to the Z value in the GPR data? Or can I do this in a simpler way?
Highly appreciate all the help I can get.