|
The DEM (30 meter resolution) that was available from INEGI
does include the
south section of the study area, which is the most heavily studied
portion. Parts of the Sierra de Tamaulipas and the Aldama Volcanic
Complex (to the east) are also included in this dataset. The 3D
Analyst tool in ArcMap was used to create a TIN of the data. Some of
these steps are seen below.
The above screen capture in ArcCatalog
shows some of the data files used in this exercise.
This image is the Aldama TIN oriented as to be looking due east. The
mountains in the background are part of the Aldama Pleisocene volcanic
complex. The higher elevations in the forground represent the
foothills of the Sierra deTamaulipas. The flat land in between these
two features is the location of Sistema
Zacatón, and the
location of the sinkholes is visible to the far left of the image about
halfway in the middle.
Here is a closer look at how the
sinkholes are represented with a 30 meter resolution TIN. Compare
this to a LADAR image of
Zacatón.
|