Find

Department of Geoscience

Esben Auken

A 3D inversion algorithm using a triple mesh approach and domain-decomposition for fast computations

Research output: Contribution to conference › Paper › Research › peer-review

Standard

A 3D inversion algorithm using a triple mesh approach and domain-decomposition for fast computations. / Engebretsen, K. W.; Zhang, B.; Fiandaca, G. et al.
2019. Paper presented at 25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019, The Hague, Netherlands.

Research output: Contribution to conference › Paper › Research › peer-review

Harvard

Engebretsen, KW, Zhang, B, Fiandaca, G & Auken, E 2019, 'A 3D inversion algorithm using a triple mesh approach and domain-decomposition for fast computations', Paper presented at 25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019, The Hague, Netherlands, 08/09/2019 - 12/09/2019.

APA

Engebretsen, K. W., Zhang, B., Fiandaca, G., & Auken, E. (2019). A 3D inversion algorithm using a triple mesh approach and domain-decomposition for fast computations. Paper presented at 25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019, The Hague, Netherlands.

CBE

Engebretsen KW, Zhang B, Fiandaca G, Auken E. 2019. A 3D inversion algorithm using a triple mesh approach and domain-decomposition for fast computations. Paper presented at 25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019, The Hague, Netherlands.

MLA

Engebretsen, K. W. et al. A 3D inversion algorithm using a triple mesh approach and domain-decomposition for fast computations. 25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019, 08 Sept 2019, The Hague, Netherlands, Paper, 2019.

Vancouver

Engebretsen KW, Zhang B, Fiandaca G, Auken E. A 3D inversion algorithm using a triple mesh approach and domain-decomposition for fast computations. 2019. Paper presented at 25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019, The Hague, Netherlands.

Author

Engebretsen, K. W. ; Zhang, B. ; Fiandaca, G. et al. / A 3D inversion algorithm using a triple mesh approach and domain-decomposition for fast computations. Paper presented at 25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019, The Hague, Netherlands.

Bibtex

@conference{7d418a07b3194b1eafaeba46332c1165,

title = "A 3D inversion algorithm using a triple mesh approach and domain-decomposition for fast computations",

abstract = "With the computer power available today full 3D inversions of transient electromagnetic data (TEM) is no longer a dream of the past. Although it is possible to perform these inversions, the problems still scale in three dimensions making large datasets slow to invert. We here propose a new triple mesh method for inverting TEM datasets with multiple transmitters and multiple receivers per transmitter. The code is relative fast and with a manageable memory consumption. In this new approach we show that by using a decoupled regular structured model mesh and two finite element forward meshes, one with a coarse discretization and one with a fine discretization, we get a substantial speed up in calculations times without sacrificing much in terms of how well we fit the data. We show that we can invert large datasets by decomposing our domain and applying this triple mesh method on each domain separately.",

author = "Engebretsen, {K. W.} and B. Zhang and G. Fiandaca and E. Auken",

year = "2019",

language = "English",

note = "25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019 ; Conference date: 08-09-2019 Through 12-09-2019",

}

RIS

TY - CONF

T1 - A 3D inversion algorithm using a triple mesh approach and domain-decomposition for fast computations

AU - Engebretsen, K. W.

AU - Zhang, B.

AU - Fiandaca, G.

AU - Auken, E.

PY - 2019

Y1 - 2019

N2 - With the computer power available today full 3D inversions of transient electromagnetic data (TEM) is no longer a dream of the past. Although it is possible to perform these inversions, the problems still scale in three dimensions making large datasets slow to invert. We here propose a new triple mesh method for inverting TEM datasets with multiple transmitters and multiple receivers per transmitter. The code is relative fast and with a manageable memory consumption. In this new approach we show that by using a decoupled regular structured model mesh and two finite element forward meshes, one with a coarse discretization and one with a fine discretization, we get a substantial speed up in calculations times without sacrificing much in terms of how well we fit the data. We show that we can invert large datasets by decomposing our domain and applying this triple mesh method on each domain separately.

AB - With the computer power available today full 3D inversions of transient electromagnetic data (TEM) is no longer a dream of the past. Although it is possible to perform these inversions, the problems still scale in three dimensions making large datasets slow to invert. We here propose a new triple mesh method for inverting TEM datasets with multiple transmitters and multiple receivers per transmitter. The code is relative fast and with a manageable memory consumption. In this new approach we show that by using a decoupled regular structured model mesh and two finite element forward meshes, one with a coarse discretization and one with a fine discretization, we get a substantial speed up in calculations times without sacrificing much in terms of how well we fit the data. We show that we can invert large datasets by decomposing our domain and applying this triple mesh method on each domain separately.

UR - http://www.scopus.com/inward/record.url?scp=85088225117&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85088225117

T2 - 25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019

Y2 - 8 September 2019 through 12 September 2019

ER -