Active Geophysical Monitoring

Chapter 1: General Concept of Active Geophysical Monitoring

• • 1.1 - Large-scale geophysical surveys of the Earth’s crust using high-power electromagnetic pulses
• • 1.2 - Development of Marine Seismic Vibrator and Experimental Results
• • 1.3 - Seismic active monitoring system concept–Advantages of Using the Complex Envelope
• • 1.4 - Elements of active geophysical monitoring theory
• • 1.5 - Active vibromonitoring: experimental systems and fieldwork results

Chapter 2: Active monitoring targets

• • 2.1 - Active geophysical monitoring of hydrocarbon reservoirs using electromagnetic methods
• • 2.2 - Joint iterative migration of surface and borehole gravity gradiometry data
• • 2.3 - Feasibility study of gravity gradiometry monitoring of CO2 sequestration in deep reservoirs using surface and borehole data
• • 2.4 - Feasibility study of reservoir monitoring using the induced polarization effect associated with nanoparticles

Chapter 3: Technology of Active Monitoring

• • 3.1 - Nonlinear processes in Seismic Active Monitoring
• • 3.2 - Optical principles of distributed sensing
• • 3.3 Geophysical exploration at Ohnuma geothermal area using optical fiber system
• • 3.4 DAS-VSP at Sumikawa geothermal field
• • 3.5 - Passive monitoring of subsurface active fluid flow
• • 3.6 - Development of large load capacity externally pressurized gas journal bearings for rotary-type vibration exciters with large static imbalance
• • 3.7 - Electromagnetic—accurately controlled routinely operated signal system and corresponding tensor transfer functions in diffusion field region
• • 3.8 - Active monitoring technology in studying the interaction of geophysical fields

Chapter 4: Theory of Data Analysis and Interpretation

• • 4.1 - Maxwell’s equations and numerical electromagnetic modeling in the context of the theory of differential forms
• • 4.2 - 3D electromagnetic holographic imaging in active monitoring of sea-bottom geoelectrical structures
• • 4.3 - Foundations of the method of EM field separation into upgoing and downgoing parts and its application to MCSEM data
• • 4.4 - Geothermal resource exploration using 3D joint Gramian inversion of airborne gravity gradiometry and magnetotelluric data

Chapter 5: Signal Processing in Active Monitoring and case histories

• • 5.1 - Effect of spatial sampling on time-lapse seismic monitoring in random inhomogeneous media
• • 5.2 - Characteristics of ACROSS signals from transmitting stations in the Tokai area and observed by Hi-net
• • 5.3 - Stacking Strategy for Acquisition of an ACROSS Transfer Function
• • 5.4 - Time-lapse detecting possible pre-slip preceding the future Nankai Trough mega-earthquake using the seismic reflection change at the subducting Philippine Sea Plate
• • 5.5 - Active and passive monitoring towards geophysical understanding of interplate seismogenesis in the offshore
• • 5.6 -ACROSS time lapse for the field study in the desert area of Saudi Arabia
• • 5.7 - Seimic time lapse imaging of air injection using single ultra-stable ACROSS seismic source and the reverse time imaging method
• • 5.8 – Decomposition and utilization of source and receiver ghosts in marine seismic reflection survey data

Chapter 6: Regional Active Monitoring Experiments

• • 6.1 - Active surface and borehole seismic monitoring of a small supercritical CO2 injection into the subsurface: experience from the CO2CRC Otway Project
• • 6.2 - Geophysical monitoring at the Nagaoka pilot-scale CO2 injection site in Japan
• • 6.3 - Comprehensive seismic monitoring of an onshore carbonate reservoir: a case study from a desert environment