เปรียบเทียบวิธี

	HEC-RAS	การสำรวจภาคสนามด้วยไฟฟ้าด้วยการสร้างภาพด้วยเรซิททิวิตี
สาขาวิชา	ธรณีฟิสิกส์	ธรณีฟิสิกส์
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1995	1996
ผู้ริเริ่ม	US Army Corps of Engineers Hydrologic Engineering Center	Loke and Barker
ประเภท	1D/2D river hydraulics and flood inundation modeling	Active source resistivity mapping and subsurface imaging
แหล่งต้นตำรับ	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.
ชื่อเรียกอื่น	HEC-RAS	ERT
ที่เกี่ยวข้อง	3	3
สรุป	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.