TY - GEN
T1 - Efficient 2D hybrid inversion of airborne frequency domain data
AU - Auken, E.
AU - Boesen, T.
AU - Christiansen, A. V.C.
AU - Fiandaca, G. F.
AU - Pfaffhuber, A. A.
AU - Vöge, M. V.
N1 - Funding Information:
This study was supported by Innovation fund Denmark, through the AirTech4Water project.
PY - 2017
Y1 - 2017
N2 - We present a 2D inversion code for frequency-domain HEM data designed for inverting field scale surveys on normal desktop computers. The fundamental algorithm is a 2.5D algorithm with field separation into primary and secondary fields. Due to limited memory, as well as performance concerns, sectioning is introduced for splitting large surveys into smaller sections. Sectioning is only done when calculating the 2D forward and derivatives, and it is done with a sufficient overlap, such that vital 2D information is preserved. The algorithm uses a hybrid scheme which i) starts with 1D forward and inverse calculations, ii) then switches to 2D forward calculations and 1D derivatives, and iii) finally ends with full 2D calculations. The result of this is a code which produces results like a 2D code, but with a substantially shorter computational time.
AB - We present a 2D inversion code for frequency-domain HEM data designed for inverting field scale surveys on normal desktop computers. The fundamental algorithm is a 2.5D algorithm with field separation into primary and secondary fields. Due to limited memory, as well as performance concerns, sectioning is introduced for splitting large surveys into smaller sections. Sectioning is only done when calculating the 2D forward and derivatives, and it is done with a sufficient overlap, such that vital 2D information is preserved. The algorithm uses a hybrid scheme which i) starts with 1D forward and inverse calculations, ii) then switches to 2D forward calculations and 1D derivatives, and iii) finally ends with full 2D calculations. The result of this is a code which produces results like a 2D code, but with a substantially shorter computational time.
UR - http://www.scopus.com/inward/record.url?scp=85039857904&partnerID=8YFLogxK
U2 - 10.3997/2214-4609.201702148
DO - 10.3997/2214-4609.201702148
M3 - Conference article in proceedings
AN - SCOPUS:85039857904
T3 - 2nd European Airborne Electromagnetics Conference 2017, Held at Near Surface Geoscience Conference and Exhibition 2017
SP - 1
EP - 5
BT - 2nd European Airborne Electromagnetics Conference 2017, Held at Near Surface Geoscience Conference and Exhibition 2017
PB - European Association of Geoscientists and Engineers, EAGE
T2 - 2nd European Airborne Electromagnetics Conference 2017
Y2 - 3 September 2017 through 7 September 2017
ER -