Effect of Data Pre-Processing on the Performance of Neural Networks for 1-D Transient Electromagnetic Forward Modeling

Autor: Muhammad Rizwan Asif, Thue S. Bording, Adrian S. Barfod, Denys J. Grombacher, Pradip K. Maurya, Anders V. Christiansen, Esben Auken, Jakob J. Larsen

Publikováno v: IEEE Access, Vol 9, Pp 34635-34646 (2021)

Geophysical modelling and data inversion are important tools for interpreting the physical properties of Earth's subsurface. Solving the inverse problem involves several computational steps and is generally a time consuming task. Artificial neural ne

Externí odkaz: https://doaj.org/article/94acec56a57c41ebb0181ffe9648f07f

Search and recovery of aircraft parts in ice-sheet crevasse fields using airborne and in situ geophysical sensors

Autor: William Colgan, Anders Vest Christiansen, Dirk van As, Kenneth D. Mankoff, Esben Auken, Joshua Elliott, Karina Hansen, Nanna B. Karlsson, Austin Lines, Olivier Ruault du Plessis, Rune Kraghede, Pascale Dubois-Fernandez, Thue S. Bording, H. Cantalloube, Helene Oriot

Publikováno v: Mankoff, K D, Van As, D, Lines, A, Bording, T, Elliott, J, Kraghede, R, Cantalloube, H, Oriot, H, Dubois-Fernandez, P, Ruault Du Plessis, O, Christiansen, A V, Auken, E, Hansen, K, Colgan, W & Karlsson, N B 2020, ' Search and recovery of aircraft parts in ice-sheet crevasse fields using airborne and in situ geophysical sensors ', Journal of Glaciology, vol. 66, no. 257, pp. 496-508 . https://doi.org/10.1017/jog.2020.26
Journal of Glaciology
Journal of Glaciology, International Glaciological Society, 2020, 66 (257), pp.496-508. ⟨10.1017/jog.2020.26⟩

International audience; On 30 September 2017, an Air France Airbus A380-800 suffered a failure of its fourth engine while over Greenland. This failure resulted in the loss of the engine fan hub, fan blades and surrounding structure. An initial search

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f6272681c95cf26515eb1b80aeb30a4
https://doi.org/10.1017/jog.2020.26

Thermal legacy of a large paleolake in Taylor Valley, East Antarctica, as evidenced by an airborne electromagnetic survey

Autor: Hilary A. Dugan, Esben Auken, N. Foley, Krista F. Myers, Denys Grombacher, Slawek Tulaczyk, Thue S. Bording, Jill A. Mikucki, Peter T. Doran, Ross A. Virginia, Nikolaj Foged

Publikováno v: Myers, K F, Doran, P T, Tulaczyk, S M, Foley, N T, Bording, T S, Auken, E, Dugan, H A, Mikucki, J A, Foged, N, Grombacher, D & Virginia, R A 2021, ' Thermal legacy of a large paleolake in Taylor Valley, East Antarctica, as evidenced by an airborne electromagnetic survey ', Cryosphere, vol. 15, no. 8, pp. 3577-3593 . https://doi.org/10.5194/tc-15-3577-2021
The Cryosphere, Vol 15, Pp 3577-3593 (2021)

Previous studies of the lakes of the McMurdo Dry Valleys have attempted to constrain lake level history, and results suggest the lakes have undergone hundreds of meters of lake level change within the last 20,000 years. Past studies have utilized the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fed5398523f260d86d6bfcae2a6fc17
https://pure.au.dk/portal/da/publications/thermal-legacy-of-a-large-paleolake-in-taylor-valley-east-antarctica-as-evidenced-by-an-airborne-electromagnetic-survey(47a8f612-01fe-4c6f-99ac-427f5ac802a7).html

Machine learning based fast forward modelling of ground-based time-domain electromagnetic data

Autor: Adrian A. S. Barfod, Thue S. Bording, Kim Wann Engebretsen, Pradip Kumar Maurya, Esben Auken, Anders Vest Christiansen, J.B. Pedersen, Jakob Juul Larsen, Bo Zhang, Muhammad Rizwan Asif, Denys Grombacher

Publikováno v: Bording, T S, Asif, M R, Barfod, A S, Larsen, J J, Zhang, B, Grombacher, D J, Christiansen, A V, Engebretsen, K W, Pedersen, J B, Maurya, P K & Auken, E 2021, ' Machine learning based fast forward modelling of ground-based time-domain electromagnetic data ', Journal of Applied Geophysics, vol. 187, 104290 . https://doi.org/10.1016/j.jappgeo.2021.104290

Inversion of large-scale time-domain electromagnetic surveys are computationally expensive and time consuming. Deterministic or probabilistic inversion schemes usually require calculations of forward responses, and often thousands to millions of forw

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e031926ffc046a1872152ab763b57f6
https://pure.au.dk/portal/da/publications/machine-learning-based-fast-forward-modelling-of-groundbased-timedomain-electromagnetic-data(bf107ee8-b312-48b9-a1f1-ccfe3b1b712a).html

Cross-borehole geoelectrical time-lapse monitoring of in situ chemical oxidation and permeability estimation through induced polarization

Autor: Thue S. Bording, Esben Auken, Gianluca Fiandaca, Anders Kristian Kühl, Jørgen Fjeldsø Christensen, Anders Vest Christiansen

Publikováno v: Bording, T, Kühl, A K, Fiandaca, G, Christensen, J F, Christiansen, A V & Auken, E 2021, ' Cross-borehole geoelectrical time-lapse monitoring of in situ chemical oxidation and permeability estimation through induced polarization ', Near Surface Geophysics, vol. 19, no. 1, pp. 43-58 . https://doi.org/10.1002/nsg.12131

Worldwide, soil contamination due to industrial activities is a major issue. One method for remediation of contaminated sites is in situ chemical oxidation, where an oxidizing agent is injected into the contaminated soil. Normally, monitoring wells a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07950ea506a2c78f9ee827ad1615666d
https://pure.au.dk/portal/da/publications/crossborehole-geoelectrical-timelapse-monitoring-of-in-situ-chemical-oxidation-and-permeability-estimation-through-induced-polarization(7fa6c729-d297-4b76-9fe8-cff5e9c38701).html