Report on distribution of rock modulus and correlation with temperature

Report towards developing a new methodology predicting the variation of temperature with depth from surface geophysical surveys (seismic surveys coupled to gravity), which will allow temperature knowledge of geothermal resources before drilling, effectively reducing geothermal risks. The report will include: 1. Calculation of spatial distribution of rock modulus of elasticity from seismic velocity and rock density profiles derived from the seismic imaging tasks and the gravity surveys carried out at the two geothermal sites of Los Humeros and Acoculco. 2. Temperature arrays derived from available on-site direct temperature measurements inside existing wells in above Mexican geothermal sites. 3. Statistical evaluation (hypothesis testing) of the correlation between above rock modulus of elasticity and temperature values. 4. Definition of correlation equations between above rock modulus of elasticity and temperature values, based on theoretical models and previous research results.