Resolving Terrain Effects in Borehole Temperature Profiles

摘要: The study of borehole paleoclimatology aids scientists in determining past climate changes and understanding current trends. Accurate temperature logs are necessary to obtain a useful profile. However, as many workers have discovered, profiles can causes inaccuracy. Uncertainties associated with data include errors stemming from measurement, depth thermophysical property measurements, terrain effects. Terrain effects topography, land cover over time, direct diffused sun radiation, groundwater flow. This focused on specific influencing the United States dataset included International Heat Flow Commission global dataset. objective is determine severity influence feasibility correcting boreholes. Large amounts terrain-influenced boreholes will affect reliability using entire modeling. Methods used identify inverse modeling, comparison observed synthetic modeling created meteorological station weather data, remote sensing. Research indicates approximately 34% 136 IHFC some degree effect. severely influenced comprise 15% three main categories topographical, water cover. Of 63 this report, 21 exhibit effect, 15 show topographical effects, minor 12 In addition, accuracy grouped variation regional area North Dakota, South Nebraska was conducted. Numerous within given area. Averaging undisturbed affects results. magnitude effect dependent type intended use data.