Mngadi S , Manzi M , Nkosi N , Durrheim R , Ogasawara H , Yabe Y .
Identification of structures capable of hosting the ML 5.5 Orkney South Africa earthquake and factors controlling the physics and mechanics of dynamic rupture.
Journal of the Southern African Institute of Mining and Metallurgy. 2025 ; 125 (1): 33 – 42. [doi][doi]

Nisson D , Kieft T , Drake H , Warr O , Sherwood Lollar B , Ogasawara H , Perl S , Friefeld B , Castillo J , Whitehouse M , Kooijman E , Onstott T .
Hydrogeochemical and isotopic signatures elucidate deep subsurface hypersaline brine formation through radiolysis driven water-rock interaction.
Geochimica et Cosmochimica Acta. 2023 ; 340 65-84. [doi][doi]

Nisson DM , Walters CC , Chacón-Patiño ML , Weisbrod CR , Kieft TL , Sherwood Lollar B , Warr O , Castillo J , Perl SM , Cason ED , Freifeld BM , Onstott TC .
Radiolytically reworked Archean organic matter in a habitable deep ancient high-temperature brine.
Nature communications. 2023 ; 14 (1): 6163. [doi][doi]

Warr O , Ballentine C , Onstott T , Nisson D , Kieft T , Hillegonds D , Sherwood Lollar B .
86Kr excess and other noble gases identify a billion-year-old radiogenically-enriched groundwater system.
Nature Communications. 2022 ; 13 (1): [doi][doi]

Miyamoto T , Hirono T , Yokoyama Y , Kaneki S , Yamamoto Y , Ishikawa T , Tsuchiyama A , Katayama I , Yabe Y , Durrheim RJ , Ogasawara H .
Characteristics of Fault Rocks Within the Aftershock Cloud of the 2014 Orkney Earthquake (M5.5) Beneath the Moab Khotsong Gold Mine, South Africa.
Geophysical Research Letters. 2022 ; 49 (14): e2022GL098745. [doi][doi]

Nkosi NZ , Manzi MS , Westgate M , Roberts D , Durrheim RJ , Ogasawara H , Ziegler M , Rickenbacher M , Liebenberg B , Onstott TC .
Physical property studies to elucidate the source of seismic reflectivity within the ICDP DSeis seismogenic zone: Klerksdorp goldfield, South Africa.
International Journal of Rock Mechanics and Mining Sciences. 2022 ; 155 105082. [doi][doi]

Yabe Y , Abe S , Hofmann G , Roberts D , Yilmaz H , Ogasawara H , Ito T , Funato A , Nakatani M , Naoi M .
Stress State in the Source Region of Mw2.2 Earthquake in a Deep Gold Mine in South Africa Determined from Borehole Cores.
Pure and Applied Geophysics. 2022 ; 179 (5): 1679-1700. [doi][doi]

Mngadi S , Tsutsumi A , Onoe Y , Manzi M , Durrheim R , Yabe Y , Ogasawara H , Kaneki S , Wechsler N , Ward A , Naoi M , Moriya H , Nakatani M .
The effect of a gouge layer on rupture propagation along brittle shear fractures in deep and high-stress mines.
International Journal of Rock Mechanics and Mining Sciences. 2021 ; 137 104454. [doi][doi]

Ogasawara H , Liebenberg B , Rickenbacher M , Ziegler M , Esterhuizen H , Onstott T , Durrheim M , Mngadi S , Yabe Y , Kaneki S , Cason E , Vermeuren J , Heerden E , Wiersberg T , Zimmer M , Kujawa C , Conze R , Aswegen G , Wechsler N , Ward A , Enslin S , Tau S , Bucibo M .
2019 status report: Drilling into seismogenic zones of M2.0–M5.5 earthquakes in South African gold mines (DSeis project).
In: Joughin W, editors. Deep Mining 2019: Proceedings of the Ninth International Conference on Deep and High Stress Mining. The Southern African Institute of Mining and Metallurgy; 2019 . p. 375-384. [doi][doi]

Voosen P .
Deep in a South African gold mine, scientists drill for the heart of an earthquake.
Science. 2017 ; [doi][doi]

Ogasawara H , Durrheim R , Yabe Y , Ito T , Aswegen G , Grobbelaar M , Funato A , Ishida A , Mngadi S , Manzi M , Ziegler M , Ward A , Hofmann G , Moyer P , Boettcher M , Dight P , Ellsworth W , Liebenberg B , Wechsler N , Onstott T , Berset N .
Drilling into seismogenic zones of M2.0 – M5.5 earthquakes from deep South African gold mines (DSeis): establishment of research sites.
In: Ogasawara H , Durrheim R , Yabe Y , Ito T , Aswegen G , Grobbelaar M , Funato A , Ishida A , Mngadi S , Manzi M , Ziegler M , Ward A , Hofmann G , Moyer P , Boettcher M , Dight P , Ellsworth W , Liebenberg B , Wechsler N , Onstott T , Berset N . Drilling into seismogenic zones of M2.0 – M5.5 earthquakes from deep South African gold mines (DSeis): establishment of research sites. International Society for Rock Mechanics; 2017 . p. 237 – 248.

Yabe Y , Nakatani M , Naoi M , Philipp J , Watanabe T , Katsura T , Kawakata H , Georg D , Ogasawara H .
Nucleation process of an M2 earthquake in a deep gold mine in South Africa inferred from on-fault foreshock activity.
Journal of Geophysical Research: Solid Earth. 2015 ; 120 (8): 5574-5594. [doi][doi]