Comparison of regional elevation heights in the Aguascalientes basin using DGPS technique with INEGI´s digital terrain model
Por:
Ortiz M., Reyna J.A., Balcazar M., Espriu A.H., Marín L.E.
Publicada:
1 ene 2010
Resumen:
The elevations of eighty-one points were measured using DGPS receivers at local INEGI benchmarks and at a geodetic station. Fifty-eight points were measured using two receivers and twenty-three points using three receivers. A sensitivity analysis on the heights obtained using the three and two receivers showed a range in measurements between 0.1 and 4.1 cm with a standard deviation of 1.1 cm. The heights obtained were compared to those of the regional Digital Terrain Model (DTM) published by INEGI (2000). Four areas were identified: those with differences less than one meter (Zone I), those with differences between 1.01 and five meters (Zone II), those with differences between 5.01 and ten meters (Zone III), and those with differences greater than ten meters. The results show that the DGPS technique provides a useful way to validate regional terrain models (DTM), and may help in increasing the resolution for special surveys or projects.
Filiaciones:
Ortiz M.:
Posgrado en Ciencias de la Tierra, Universidad Nacional Autónoma de México, Ciudad Universitaria, Del. Coyoacn, 04510 Mexico City, Mexico
Reyna J.A.:
Grupo Ha´, Moctezuma 97-A, Col. Toriello Guerra, Del. Tlalpan, 14050, Mexico City, Mexico
Balcazar M.:
Grupo Ha´, Moctezuma 97-A, Col. Toriello Guerra, Del. Tlalpan, 14050, Mexico City, Mexico
Espriu A.H.:
Grupo de Hidrogeología de la Facultad de Ingeniería, Universidad Nacional Autónoma de México, Ciudad Universitaria, Del. Coyoacn, Mexico City, Mexico
Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain
Marín L.E.:
Departamento de Recursos Naturales, Instituto de Geofísica, Universidad Nacional Autónoma de México, Ciudad Universitaria, Del. Coyoacn, 04510, Mexico City, Mexico
|