Digital Geography

Macro-Based SE-GPS

When you’re in the field you want to collect as much data as possible using all the expensive and heavy equipment you brought with. For instance, geophysical profiling (e.g. ERT, electrical resistivity tomography; GPR, ground-penetrating radar) provides high-resolution images of the shallow subsurface. Often conspicuous geometries are evidences for changes in the subsurface.

projections, ellipsoids/spheroids, coordinate systems, datum and all this crazy cartographic stuff.

We will go straight to the main part of the problem:how to communicate, where you are. Sometimes it is as easy as “one, two, three” but most likely it is as you are talking in another language compared to your listener. Let us assume you say something like “I am in the mall 500m northwest of the church”. Well there is plenty of information in it. More after the break!