International Journals

2018

Jongwoo Lee and Wansoo Ha*, 2018, Laplace-domain waveform inversion using the l-BFGS method: Geosystem Engineering, Published online.

2017

Changsoo Shin and Wansoo Ha*, 2017(Dec), Accumulated energy norm for full waveform inversion of marine data: Journal of Applied Geophysics, 147, 91-101.

Ahreum Kim, Donghyun Ryu, and Wansoo Ha*, 2017(Oct), An efficient time-domain full waveform inversion using the excitation amplitude method: Journal of Seismic Exploration, 26(5), 481-498.

Donghyun Ryu, Ahreum Kim, Wansoo Ha*, and Changsoo Shin, 2017(Jun), Robustness of Laplace domain waveform inversions to cycle skipping: Journal of Seismic Exploration, 26(3), 251-266.

2016

Seung-Goo Kang, Changsoo Shin*, Wansoo Ha, and Jong Kuk Hong, 2016(Jun), A gradient scaling method for Laplace domain full waveform inversion in acoustic-elastic coupled media: Journal of Seismic Exploration, 25(3), 199-227.

Yongchae Cho, Wansoo Ha, Youngseo Kim, Changsoo Shin, Satish Singh, and Eunjin Park*, 2016 (Mar), Laplace-Fourier-domain full waveform inversion of deep-sea seismic data acquired with limited offsets: Pure and Applied Geophysics, 173(3), 749-773.

Seung-Goo Kang, Wansoo Ha*, Changsoo Shin, Jong Kuk Hong, and Young Keun Jin, 2016 (Feb), Frequency domain reverse time migration for acoustic-elastic coupled media using the wavefield separation method: Journal of Seismic Exploration, 25(1), 57-85.

2015

Donghyun Ryu, Ahreum Kim, and Wansoo Ha*, 2015 (Oct), Expanding domain method for 3D time-Laplace-domain hybrid modeling: Geosystem Engineering, 18(5), 259-265.

Ahreum Kim, Donghyun Ryu, Wansoo Ha* and Changsoo Shin, 2015 (Oct), An efficient first arrival picking procedure for marine streamer data: Geosystem Engineering, 18(5), 251-258.

Wansoo Ha, Seung-Goo Kang*, and Changsoo Shin, 2015 (Jan), 3D Laplace-domain waveform inversion using a low-frequency time-domain modeling algorithm: Geophysics, 80(1), R1-R13.

2014

Yunhui Park, Sukjoon Pyun*, and Wansoo Ha, 2014 (Dec), An efficient wavenumber-space-time domain finite-difference modeling of acoustic wave equation for synthesizing CMP gathers: Geosystem Engineering, 17(5), 287-293.

Jungkyun Shin, Wansoo Ha*, Hyunggu Jun, Dong-Joo Min, and Changsoo Shin, 2014 (Jun), 3D Laplace-domain full waveform inversion using a single GPU card: Computers and Geosciences, 67, 1-13.

Wansoo Ha* and Changsoo Shin, 2014 (May), Partial energy stack section for qualitative subsurface velocity estimation: Journal of Applied Geophysics, 104, 58-63.

Seungwoo Choi, Dong-Joo Min*, Ju-Won Oh, Wookeen Chung, Wansoo Ha, and Changsoo Shin, 2014 (May), Frequency-domain acoustic and elastic modeling and waveform inversion in the logarithmic grid set: Journal of Seismic Exploration, 23, 103-130.

2013

Eunjin Park, Wansoo Ha*, Wookeen Chung, Changsoo Shin, and Dong-Joo Min, 2013 (Dec), 2D Laplace-domain waveform inversion of field data using a power objective function: Pure and Applied Geophysics, 170(12), 2075-2085.

Changsoo Shin, Wansoo Ha*, and Youngseo Kim, 2013 (Sep), Subsurface model estimation using Laplace-domain inversion methods: The Leading Edge, 32(9), 1094-1099.

Sangmin Kwak, Hyunggu Jun, Wansoo Ha*, and Changsoo Shin, 2013 (Sep), Temporal windowing and inverse transform of the wavefield in the Laplace-Fourier domain: Geophysics, 78(5), R207-R222.

Wansoo Ha* and Changsoo Shin, 2013 (Jul), Why do Laplace-domain waveform inversions yield long-wavelength results?: Geophysics, 78(4), R167-R173.

Jewoo Yoo, Wansoo Ha*, Changsoo Shin, and Dong-Joo Min, 2013 (May), Scattered energy inversion of seismic data: Journal of Seismic Exploration, 22(2), 183-208.

Wansoo Ha* and Changsoo Shin, 2013 (Mar), Efficient Laplace-domain full waveform inversion using a cyclic shot subsampling method: Geophysics, 78(2), R37-R46.

2012

Byoung Joon Yoon, Wansoo Ha*, Woohyun Son, Changsoo Shin, and Henri Calandra, 2012 (Dec), 3D acoustic modelling and waveform inversion in the Laplace domain for an irregular sea floor using the Gaussian quadrature integration method: Journal of Applied Geophysics, 87, 107-117.

Wansoo Ha* and Changsoo Shin, 2012 (Sep), Laplace-domain full waveform inversion of seismic data lacking low-frequency information: Geophysics, 77(5), R199-R206.

Wansoo Ha* and Changsoo Shin, 2012 (Aug), Proof of the existence of both zero- and low-frequency information in a damped wavefield: Journal of Applied Geophysics, 83, 96-99.

Wansoo Ha, Wookeen Chung*, and Changsoo Shin, 2012 (Aug), Pseudo-Hessian matrix for the logarithmic objective function in full waveform inversion: Journal of Seismic Exploration, 21(3), 201-214.

Wansoo Ha* and Changsoo Shin, 2012 (Jul), Efficient Laplace-domain modeling and inversion using an axis transformation technique: Geophysics, 77(4), R141-R148.

Wansoo Ha, Wookeen Chung, Eunjin Park, and Changsoo Shin*, 2012 (Jul), 2-D acoustic Laplace-domain waveform inversion of marine field data: Geophysical Journal International, 190(1), 421-428.

Wansoo Ha, Wookeen Chung*, Sungryul Shin, and Changsoo Shin, 2012 (Jul), Non-uniqueness of waveform inversions in the Laplace domain: Geosystem Engineering, 15(3), 151-156.

Changsoo Shin*, Sunyoung Park, Wansoo Ha, and Wookeen Chung, 2012 (Mar), Gravitational fields as sums of wavefields: Scientific Journal of Physical Science, 2(1), 44-47.

Changsoo Shin*, Wansoo Ha, Wookeen Chung, and Sunyoung Park, 2012 (Jan), Unresolvable human mental states based on a parallel universe theory: Advancements and Developments in Applied Mathematics, 1(1), 18-29.

2010

Wansoo Ha*, Sukjoon Pyun, Jewoo Yoo, and Changsoo Shin, 2010 (Nov), Acoustic full waveform inversion of synthetic land and marine data in the Laplace domain: Geophysical Prospecting, 58(6), 1033-1048

Wansoo Ha*, YoungHo Cha, and Changsoo Shin, 2010 (Sep online), A comparison between Laplace domain and frequency domain methods for inverting seismic waveforms: Exploration Geophysics, 41(3), 189-197.

2008

Changsoo Shin and Wansoo Ha*, 2008 (Oct), A comparison between the behavior of objective functions for waveform inversion in the frequency and Laplace domains: Geophysics, 73(5), VE199-VE133.

(* corresponding author)