Appalachian Basin Play Fairway Analysis: Thermal Quality Analysis in Low-Temperature Geothermal Play Fairway Analysis (GPFA-AB)

This collection of files are part of a larger dataset uploaded in support of Low Temperature Geothermal Play Fairway Analysis for the Appalachian Basin (GPFA-AB). Phase 1 of the GPFA-AB project identified potential Geothermal Play Fairways within the Appalachian basin of Pennsylvania, West Virginia and New York. This was accomplished through analysis of 4 key criteria: thermal quality, natural reservoir productivity, risk of seismicity, and heat utilization. Each of these analyses represent a distinct project task, with the fifth task encompassing combination of the 4 risks factors. Supporting data for all five tasks has been uploaded into the Geothermal Data Repository node of the National Geothermal Data System (NGDS).

This submission comprises the data for Thermal Quality Analysis (project task 1) and includes all of the necessary shapefiles, rasters, datasets, code, and references to code repositories that were used to create the thermal resource and risk factor maps as part of the GPFA-AB project. The identified Geothermal Play Fairways are also provided with the larger dataset. Figures (.png) are provided as examples of the shapefiles and rasters. The regional standardized 1 square km grid used in the project is also provided as points (cell centers), polygons, and as a raster. Two ArcGIS toolboxes are available: 1) RegionalGridModels.tbx for creating resource and risk factor maps on the standardized grid, and 2) ThermalRiskFactorModels.tbx for use in making the thermal resource maps and cross sections. These toolboxes contain item description documentation for each model within the toolbox, and for the toolbox itself. This submission also contains three R scripts: 1) AddNewSeisFields.R to add seismic risk data to attribute tables of seismic risk, 2) StratifiedKrigingInterpolation.R for the interpolations used in the thermal resource analysis, and 3) LeaveOneOutCrossValidation.R for the cross validations used in the thermal interpolations.

Some file descriptions make reference to various 'memos'. These are contained within the final report submitted October 16, 2015.

Each zipped file in the submission contains an 'about' document describing the full Thermal Quality Analysis content available, along with key sources, authors, citation, use guidelines, and assumptions, with the specific file(s) contained within the .zip file highlighted.

UPDATE: Newer version of the Thermal Quality Analysis has been added here: (Also linked below) Newer version of the Combined Risk Factor Analysis has been added here: (Also linked below) This is one of 14 associated files relating to Worm Based Interpolation Boundaries, as part of the Low Temperature Geothermal Play Fairway Analysis for the Appalachian Basin. This file contains the binary grid (raster) for Eastern New York.

The 14 files .zip files contain the data used and the products of the worm-based delineation of interpolation boundaries using ArcGIS. The gravity and pseudogravity (magnetic) worms are contained in two SQLite databases that are part of a separate data submission, "Risk of Seismicity in Low-Temperature Geothermal Play Fairway Analysis for the Appalachian Basin (GPFA-AB)". These databases were loaded into QGIS and queried for only those worm levels (worm_level) that were greater than 18, which is essentially deeper than 18 km. These were converted into a shapefile for display purposes (GravWorms_18+.shp and MagWorms_18+.shp). Digitization of the interpolation boundaries was done in ArcGIS using the Editor toolbar, and was based primarily on the gravity worms. Only one region, SWPA, required information from the magnetic worms because of a strong magnetic contrast that defines this section. Names of the boundaries were made according to geographic location within the Appalachian Basin. For example, the so-called Valley and Ridge boundary roughly follows the Valley and Ridge physiographic province. Further details, including full names of the sections, are provided within the file called 9_GPFA-AB_InterpolationThermalFieldEstimation.pdf (within the project final report). Note that section MT and section WWV are used interchangeably to refer to the same section.

Section names used in the file name schema:
CNY = Central New York; CT = Chautauqua County, New York; CWV = Central West Virginia; ENY = Eastern New York; ENYPA = Eastern New York and Eastern Pennsylvania; MT = Western West Virginia; NWPANDY = Northwestern Pennsylvania and Northwestern New York; SWPA = Southwestern Pennsylvania; VR = Valley and Ridge; WPA = Western Pennsylvania

Data and Resources

Metadata Source

Additional Info

Field Value
Citation Date 2015-09-30T00:00:00-06:00

Harvest Information

Original ID f0000012-58cc-4372-a567-000000000638
Index Date 2020-01-13T10:59:50-07:00
Original Format ISO-USGIN
Original Version 1.2


Name Teresa E. Jordan
Position primary contact
Organization Cornell University

Geographic Extent

North Bound 43.5
South Bound 37
East Bound -74.5
West Bound -82.5