SELECTION SUMMARY
도입 판단 요약
This measure tracks cumulative progress of NOAA’s National Geodetic Survey toward completing gravity observations for the Redefinition of the American Vertical Datum (GRAV-D) initiative and implementation of a new National Vertical Datum. The measure indicates the percentage of the U.S. for which NOAA has airborne gravity data necessary to support the new National Vertical Datum. This improved vertical reference system is critical for all observing systems and activities requiring accurate heights. For example, this system is important for helping determine where water flows in order to make accurate inundation models and assessments.
이 제품의 적합 용도와 제한 조건은 아직 검수하지 않았습니다. 태그와 카테고리는 찾아가는 길이지 적합성 보증이 아닙니다.
