专业英语一维大地电磁(MT)正反演作业
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1 3000 m, 2 1500 m, 3 400 m，h1 100m，h2 200m
Inversion Examples
The inversion result of the type G
Real value:
1 200 m, 2 500 m, h1 1000m
1 1000 m, 2 500 m, 3 1000 m，h1 500m，h2 1000 m
Initial value: 1 800 m, 2 800 m, 3 800 m，h1 200m，h2 200m
After 8 iteration:
Inversion for one-dimensional magnetotelluric sounding method
XXXXX * XXXXXXXXXXXXXXXXXXX xxxxxxxxxxxxx *corresponding Author E-mail address:XXXXXXX@XXX.com Tel:1XXXXxxxx
1 400 m, 2 1500 m, 3 3000 m，h1 100m，h2 200m
Forward modeling over the three horizontal layers
begins with the left branch of the curve approaching the first layered resistivity value, followed by a mild increase, and it ends up with a decrease until the right branch approaching the third layer resistivity value
3.11811010
Discussions and Conclusions
the inversion results show that the speed and stability of the damping least squares inversion are good, but it’s very important to select initial value, the wrong selection of initial value, especially over four medium results in the target function to obtain a local minimum, thus departing from the true value. Bostic inversion can be carried out first after semi-quantitative interpretation to attain first-layer dielectric parameters to constrain the selection of initial value of the damping least squares method .
meanwhile, the damped least square method well-known and classical method for the inversion also is well applied.
Forward Modeling
Forward modeling over the two horizontal layers
Initial value:
After 8 iteration:
1 100 m, 2 100 m, h1 500m
1.121910
10
Inversion Examples
The inversion result of the type H
Real value:
1 400 m, 2 1500 m, 3 400 m，h1 100m，h2 200m
Forward modeling over the three horizontal layers
begins with the left branch of the curve approaching the first layered resistivity value, followed by a mild decrease, and a relatively sharp decrease after a mild increase,and it ends up with a increase until the right branch approaching the third layer resistivity value.
Inversion for one-dimensional MT
1.Introduction 2.Forward Modeling 3.Inversion Examples 4.Discussions and Conclusions
Introduction
Inversion for one-dimensional MT over horizontal layers fundamental research of complex geological models will be simply interpreted in this paper, and MATLAB is adopted for all the computation work including forward and inversion,
1 400 m, 2 1500 m, h1 100m
1 1500 m, 2 400 m, h1 100m
Forwar源自文库 modeling over the three horizontal layers
begins with the left branch of the curve approaching the first layered resistivity value, followed by a mild increase, and a sharp increase after a decrease,and it ends up with a decrease until the right branch approaching the third layer resistivity value
1 1500 m, 2 400 m, 3 1500 m，h1 100m，h2 200m
Forward modeling over the three horizontal layers
begins with the left branch of the curve approaching the first layered resistivity value, followed by a mild decrease, and it ends up with a decrease until the right branch approaching the third layer resistivity value.
ACKNOWLEDGEMENTS
At last but not least, to complete the paper, I really appreciate the guidance from teachers. The author also would like to acknowledge the assistance from H, who provides anything I need. At the same time, thanks a lot for the efforts of T.
Inversion Examples
The inversion result of the type G
Real value:
1 200 m, 2 500 m, h1 1000m
1 1000 m, 2 500 m, 3 1000 m，h1 500m，h2 1000 m
Initial value: 1 800 m, 2 800 m, 3 800 m，h1 200m，h2 200m
After 8 iteration:
Inversion for one-dimensional magnetotelluric sounding method
XXXXX * XXXXXXXXXXXXXXXXXXX xxxxxxxxxxxxx *corresponding Author E-mail address:XXXXXXX@XXX.com Tel:1XXXXxxxx
1 400 m, 2 1500 m, 3 3000 m，h1 100m，h2 200m
Forward modeling over the three horizontal layers
begins with the left branch of the curve approaching the first layered resistivity value, followed by a mild increase, and it ends up with a decrease until the right branch approaching the third layer resistivity value
3.11811010
Discussions and Conclusions
the inversion results show that the speed and stability of the damping least squares inversion are good, but it’s very important to select initial value, the wrong selection of initial value, especially over four medium results in the target function to obtain a local minimum, thus departing from the true value. Bostic inversion can be carried out first after semi-quantitative interpretation to attain first-layer dielectric parameters to constrain the selection of initial value of the damping least squares method .
meanwhile, the damped least square method well-known and classical method for the inversion also is well applied.
Forward Modeling
Forward modeling over the two horizontal layers
Initial value:
After 8 iteration:
1 100 m, 2 100 m, h1 500m
1.121910
10
Inversion Examples
The inversion result of the type H
Real value:
1 400 m, 2 1500 m, 3 400 m，h1 100m，h2 200m
Forward modeling over the three horizontal layers
begins with the left branch of the curve approaching the first layered resistivity value, followed by a mild decrease, and a relatively sharp decrease after a mild increase,and it ends up with a increase until the right branch approaching the third layer resistivity value.
Inversion for one-dimensional MT
1.Introduction 2.Forward Modeling 3.Inversion Examples 4.Discussions and Conclusions
Introduction
Inversion for one-dimensional MT over horizontal layers fundamental research of complex geological models will be simply interpreted in this paper, and MATLAB is adopted for all the computation work including forward and inversion,
1 400 m, 2 1500 m, h1 100m
1 1500 m, 2 400 m, h1 100m
Forwar源自文库 modeling over the three horizontal layers
begins with the left branch of the curve approaching the first layered resistivity value, followed by a mild increase, and a sharp increase after a decrease,and it ends up with a decrease until the right branch approaching the third layer resistivity value
1 1500 m, 2 400 m, 3 1500 m，h1 100m，h2 200m
Forward modeling over the three horizontal layers
begins with the left branch of the curve approaching the first layered resistivity value, followed by a mild decrease, and it ends up with a decrease until the right branch approaching the third layer resistivity value.
ACKNOWLEDGEMENTS
At last but not least, to complete the paper, I really appreciate the guidance from teachers. The author also would like to acknowledge the assistance from H, who provides anything I need. At the same time, thanks a lot for the efforts of T.