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@ARTICLE{2026ESS...1304686P,
       author = {{Phiranram}, T. and {Chenrai}, P. and {Phantuwongraj}, S. and {Kitpracha}, C.},
        title = "{Geophysical Investigation of Geothermal Potential in Southern Thailand: Insights From GGMplus Gravity}",
      journal = {Earth and Space Science},
     keywords = {GOCE, hot springs, gravity survey, clean energy, Bouguer anomaly},
         year = 2026,
        month = jul,
       volume = {13},
       number = {7},
          eid = {e2025EA004686},
        pages = {e2025EA004686},
     abstract = "{Southern Thailand hosts numerous low- to medium-enthalpy geothermal
        manifestations in a non-volcanic setting. This study
        investigates the geothermal potential of the region through the
        integration of satellite-derived gravity data and geological
        observations. The high-resolution Global Gravity Model plus
        (Gemplus), which integrates GOCE/GRACE satellite gravity data
        and EGM2008 with topographic information, was employed to
        delineate gravity anomalies associated with subsurface
        structures. Following the application of free-air, Bouguer, and
        terrain corrections to achieve complete Bouguer anomalies,
        regional and residual effects were distinguished through upward
        continuation. The residual Bouguer anomaly map reveals three
        distinct anomaly facies: (a) low anomalies over mountainous
        areas (<{\ensuremath{-}}7 mGal) indicating the presence of deep
        crustal roots; (b) moderate anomalies ranging between
        {\ensuremath{-}}7 and +3 mGal in Tertiary basins; and (c) high
        anomalies (>+3 mGal) in Quaternary basins along the eastern
        coastal area, possibly indicative of crustal thinning or shallow
        high-density bodies. To enhance the edge of density variations,
        the total horizontal derivative (THD) was applied on both
        residual and regional gravity fields. THD lineaments show
        dominant NNE--SSW trends correlating with major faults (e.g.,
        Ranong and Khlong Marui Fault Zones) in the upper peninsula and
        reveal unmapped lineaments in the lower peninsula. Numerous hot
        springs spatially coincide with these lineaments and granite-
        sediment contacts, highlighting geothermal potential. The
        findings of this study demonstrate the significance of satellite
        gravity data in geothermal exploration. However, ambiguity in
        gravity interpretations requires additional geophysical
        investigations, such as magnetotelluric or seismic methods.}",
          doi = {10.1029/2025EA004686},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2026E&SS...1304686P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}