Thermal structure and earthquakes in the shallow subducting oceanic crust

For more info about our services contact : help@bestpfe.com

Table of contents

CHAPTER 1. GENERAL INTRODUCTION
1.1 Motivation
1.2 Subduction zones
1.3 Research framework
CHAPTER 2. FADING MAGNETIC ANOMALIES, THERMAL STRUCTURE AND EARTHQUAKES IN THE JAPAN TRENCH
2.1 Abstract
2.2 Introduction
2.3 Geological settings of North-West Pacific
2.4 Data and methods
2.5 A new magnetic anomaly map on the japan trench area
2.6 Magnetic structure of the oceanic crust and progressive demagnetization
2.7 Thermal structure and earthquakes in the shallow subducting oceanic crust
2.8 Acknowledgement
2.9 Supplementary materials
2.9.1 Crossover correction for scalar and vector magnetic anomalies
2.9.1 Uncertainties in the slab geometry
2.9.1 Effect of a dipping slab on the inclination and declination of magnetization, consequences on the amplitude of magnetic anomalies
CHAPTER 3. FADING MAGNETIC ANOMALIES, LITHOSPHERIC FLEXURE AND REJUVENATED HYDROTHERMALISM OFF THE JAPAN-KURIL SUBDUCTION ZONE
3.1 Abstract
3.2 Introduction
3.3 Data and methods
3.4 Magnetic structure of the subducting plate before entering the japan-kuril trench
3.5 Decay of magnetization before subduction: alteration as the main process
3.6 An integrated magnetization model of the subducting plate
3.7 Acknowledgement
CHAPTER 4. THE TWO CATEGORIES OF FADING MARINE MAGNETIC ANOMALY IN SUBDUCTION ZONES
4.1 Abstract
4.2 Introduction
4.3 Data and methods
4.3.1 Selection of study area
4.3.2 Magnetic data collection and processing
4.3.3 Basement geometry data and processing
4.3.4 Remaining amount of magnetization
4.4 Results
4.4.1 Magnetization loss in old oceanic lithosphere
4.4.2 Magnetization loss in young oceanic lithosphere
4.5 Discussion
4.5.1 Comparison betwee the two categories
4.5.1.1 Before subduction
4.5.1.2 After subduction
4.5.2 Discussion for the other subduction zones
4.6 Acknowledgement
4.7 Supplementary materials
4.7.1 Japan-Kuril
4.7.2 West Aleutian
4.7.3 Central Aleutian
4.7.3 South Alaska
4.7.5 Cascadia
CHAPTER 5. GENERAL CONCLUSIONS
5.1 New high-resolution magnetic anomaly map
5.2 Decaying magnetic signals in subduction zones
5.3 Perspectives
APPENDICES
APPENDIX 1. SEA-SURFACE MAGNETIC DATA PROCESSING
A1.1 Introduction
A1.2 Proton precession magnetometer
A1.3 Shipboard three-component magnetometer
A2.1 Introduction
A2.2 Misfit analysis
BIBLIOGRAPHY