השוואת שיטות

	HEC-RAS	טומוגרפיית התנגדות חשמלית
תחום	גאופיזיקה	גאופיזיקה
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1995	1996
הוגה השיטה	US Army Corps of Engineers Hydrologic Engineering Center	Loke and Barker
סוג	1D/2D river hydraulics and flood inundation modeling	Active source resistivity mapping and subsurface imaging
מקור מכונן	Brunner, G. W. (2010). HEC-RAS river analysis system hydraulic reference manual. US Army Corps of Engineers Hydrologic Engineering Center.	Loke, M. H., & Barker, R. D. (1996). Rapid least-squares inversion of apparent resistivity pseudosections by a quasi-Newton method. Geophysical Prospecting, 44(1), 131-152.
כינויים	HEC-RAS	ERT
קשורות	3	3
תקציר	HEC-RAS (Hydrologic Engineering Center River Analysis System) is a hydraulic modeling software developed by the US Army Corps of Engineers that computes water surface elevation and velocity in open channels and floodplains, and depicts inundation extent and depth. Since its introduction in 1995, HEC-RAS has become the de facto standard for floodplain delineation, dam break analysis, and flood risk assessment for regulatory and engineering purposes.	Electrical Resistivity Tomography (ERT) is an active-source geophysical method that maps the spatial distribution of electrical resistivity in the subsurface by injecting current between two electrodes and measuring potential differences across an array of receiver electrodes. Advanced as a practical technique by Loke and Barker in 1996, ERT has become standard for hydrogeological, environmental, and structural characterization due to its sensitivity to fluid saturation and salt content.