9 Contents Chapter 9 • Defining high enthalpy geothermal drilling target with multi-physics integrated exploration program. Mayotte’s Petite-Terre Island case study 257 A. Stopin, C. Dezayes and T. Farlotti Introduction 257 9.1 Integration of magnetotelluric data 260 9.2 Electric profile integration 264 9.3 Gravimetric data integration 267 9.4 Final model 268 9.5 Choice of the drilling target 271 References 272 Chapter 10 • Feasibility of monitoring cold fronts of geothermal doublets using 4D active electromagnetic techniques – a field trial in the Dogger play in the Paris Basin 275 F. Dubois, A. Stopin, F. Bretaudeau and P. Wawrzyniak Introduction 276 10.1 Context 277 10.2 Acquisition 278 10.3 Receiver conception 281 10.4 Survey 282 10.5 Data processing 284 10.6 Detectability of the cold front 287 Conclusions 288 References 290 Synthesis 291 G. Paixach and J.L. Mari A range of geothermal systems 291 A range of geophysical techniques 292 Geophysics for geothermal systems 293 From resource exploration to drilling project de-risking and asset monitoring 295 Conclusion 297 J.L. Mari and G. Paixach
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