Desarrollo de estrategias para integración de las Redes Verticales de América del Sur con base en los términos de referencia SIRGAS/GGOS/IAG

Abstract

The Vertical Reference Systems (VRSs) along with their national, regional and global materializations  in  frames,  have  been  in  a  significant  evolution  in  the  last  years  because they are fundamental for the monitoring of physical processes associated with changes  in  the  Earth  System.  The  endorsement  of  Earth  observation  systems  comes  from the Global Geodetic Observing System (GGOS) supported by the International Association  of  Geodesy  (IAG).  These organizations are based on standards and reference terms to generate accurate and reliable geospatial information. The SIRGAS (Sistema de Referencia Geocéntrico para las Américas), in the context of its Working Group III: Vertical Datum, aims to meet the requirements of GGOS/IAG to provide a modern SIRGAS Vertical Reference System (SVRS).  For this, it is necessary to homogenize and unify the National Vertical Reference Networks (NVRNs) considering the gravity field. This  research  presents  the  methodology  developed for an Ecuadorian NVRN  metadata  inventory  in  view  of  the SIRGAS/GGOS/IAG reference  terms.  The  achieved  results  can  serve  as  a  basis  for  the  development  strategies  for  the  integration  the  Vertical  Networks  in  South  America.  Also, this inventory contributes   for   building a future Spatial   Data   Infrastructure   for   the Americas according the objectives of the UN-GGIM: Americas.