Active Geophysical Monitoring

Contents
Preface
Part I. General Concept and Historical Review
General Concept of Active Geophysical Monitoring
1 Seismicity Precursors for Active AAonitoring of Earthquakes
2 Large-scale Geophysical Surveys of the Earth’s Crust Using High-power Electromagnetic Pulses
3 Elements of Active Geophysical Monitoring Tlieory
4 Seismic Active Monitoring System Concept

Active Monitoring Targets
5 Detection of Transient Phenomena Due to Active Scatterers
6 Active Vibromonitoring: Experimental Systems and Fieldwork Results
7 Reliable Measurement Method to Reveal a Peculiar Dielectric Dispersion in Wet Rocks by Means of ACROSS
8 Active Geophysical Monitoring of Hydrocarbon Reservoirs Using EM Methods

Part II. Theory and Technology of Active Monitoring
Technology of Active Monitoring
9 Acquisition of Crosswell Seismic IVlonitoring Data
10 EM-ACROSS System and Corresponding Tensor Transfer Functions in Diffusion Field Region
11 Design and Workout of ACROSS Transmitters Using Air Bearings

Signal Processing and Accuracy Control in Active Monitoring
12 Stacking Strategy for Acquisition of an ACROSS Transfer Function
13 Secondary Calibration Method of Seismometers by Utilizing ACROSS Signal
14 Signal Discrimination of External Geomagnetic Effects Using the Transfer Function Approach with Continuous Wavelet Transform
15 Development of Simulation Algorithm for Analyzing Temporal Stability of ACROSS Seismic Source
16 Nonlinear Processes In Seismic Active Monitoring

Theory of Data Analysis and Interpretation
17 Maxwell’s Equations and Numerical Electromagnetic Modeling in tlie Context of the Theory of Differential Forms
18 3D Electromagnetic Holographic Imaging in Active Monitoring of Sea-Bottom Geoelectrical Structures
19 Foundations of the Method of EM Field Separation into Upgoingand Downgoing Parts and its Application to MCSEM Data
20 Automatic Travel Time Determination from a Frequency-domain Transfer Function: The Sompi Event
21 Effect of Spatial Sampling on Time-lapse Seismic Monitoring in Random Heterogeneous Media
22 Singular Value Decomposition in Active Monitoring Data Analysis

Part III. Case Histories
Regional Active Monitoring Experiments
23 Detection and Continuous Monitoring of Strong Seismic Reflectors at the Subducting Philippine Sea Plate Using ACROSS Methodology
24 Active Seismic Monitoring of the San Andreas Fault at Parkfield
25 Characteristics of ACROSS Signals Transmitted from the Tono Transmitting Station and Observed by Hi-net
26 Active Monitoring Using Submarine Cables—Leveraging Offshore Cabled Observatory for Passive Monitoring
27 Seasonal Changes in Vibroseismic Monitoring Experiments in Siberia
28 Estimates of Crustal Stress Sensitivity in the Lake Baikal Region, from Active Vibroseismic Monitoring and Solid Earth Tide Data
Author Index
Subject Index

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