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Geophysical evidence for structurally-controlled, authigenic carbonate cementation in the Laminaria High, Bonaparte basin, Northwest Shelf of Australia (2018)
Journal Article
Abudlkareem, L., Imber, J., & Hobbs, R. (2019). Geophysical evidence for structurally-controlled, authigenic carbonate cementation in the Laminaria High, Bonaparte basin, Northwest Shelf of Australia. Marine and Petroleum Geology, 99, 563-576. https://doi.org/10.1016/j.marpetgeo.2018.10.018

3D seismic reflection data are used to investigate the processes which have led to the development of amplitude anomalies on reflectors in the faulted, Cenozoic overburden on the Laminaria High, Northwest Shelf of Australia. Amplitude and root mean s... Read More about Geophysical evidence for structurally-controlled, authigenic carbonate cementation in the Laminaria High, Bonaparte basin, Northwest Shelf of Australia.

Uncertainty analysis of depth predictions from seismic reflection data using Bayesian statistics (2018)
Journal Article
Michelioudakis, D., Hobbs, R., & Caiado, C. (2018). Uncertainty analysis of depth predictions from seismic reflection data using Bayesian statistics. Geophysical Journal International, 213(3), 2161-2176. https://doi.org/10.1093/gji/ggy093

Estimating the depths of target horizons from seismic reflection data is an important task in exploration geophysics. To constrain these depths we need a reliable and accurate velocity model. Here, we build an optimum 2D seismic reflection data proce... Read More about Uncertainty analysis of depth predictions from seismic reflection data using Bayesian statistics.

Thermal structure of the Panama Basin by analysis of seismic attenuation (2018)
Journal Article
Vargas, C., Pulido, J., & Hobbs, R. (2018). Thermal structure of the Panama Basin by analysis of seismic attenuation. Tectonophysics, 730, 81-99. https://doi.org/10.1016/j.tecto.2018.02.017

Using recordings of earthquakes on Oceanic Bottom Seismographs and onshore stations on the coastal margins of Colombia, Panama, and Ecuador, we estimate attenuation parameters in the upper lithosphere of the Panama Basin. The tomographic images of th... Read More about Thermal structure of the Panama Basin by analysis of seismic attenuation.

Expedition 369 Preliminary Report: Australia Cretaceous Climate and Tectonics. International Ocean Discovery Program. Tectonic, paleoclimate, and paleoceanographic history of high-latitude southern margins of Australia during the Cretaceous, 26 September–26 November 2017 (2018)
Book
Huber, B., Hobbs, R., Bogus, K., & Scientists, E. 3. (2018). Expedition 369 Preliminary Report: Australia Cretaceous Climate and Tectonics. International Ocean Discovery Program. Tectonic, paleoclimate, and paleoceanographic history of high-latitude southern margins of Australia during the Cretaceous, 26 September–26 November 2017. International Ocean Discovery Program. https://doi.org/10.14379/iodp.pr.369.2018

The tectonic and paleoceanographic setting of the Great Australian Bight (GAB) and the Mentelle Basin (MB; adjacent to Naturaliste Plateau) offered an outstanding opportunity to investigate Cretaceous and Cenozoic climate change and ocean dynamics du... Read More about Expedition 369 Preliminary Report: Australia Cretaceous Climate and Tectonics. International Ocean Discovery Program. Tectonic, paleoclimate, and paleoceanographic history of high-latitude southern margins of Australia during the Cretaceous, 26 September–26 November 2017.

A sequential dynamic Bayesian network for pore pressure estimation with uncertainty quantification (2017)
Journal Article
Oughton, R. H., Wooff, D. A., Hobbs, R. W., Swarbrick, R. E., & O'Connor, S. A. (2018). A sequential dynamic Bayesian network for pore pressure estimation with uncertainty quantification. Geophysics, 83(2), D27-D39. https://doi.org/10.1190/geo2016-0566.1

Pore-pressure estimation is an important part of oil-well drilling, since drilling into unexpected highly pressured fluids can be costly and dangerous. However, standard estimation methods rarely account for the many sources of uncertainty, or for th... Read More about A sequential dynamic Bayesian network for pore pressure estimation with uncertainty quantification.

Gas venting that bypasses the feather edge of marine hydrate, offshore Mauritania (2017)
Journal Article
Li, A., Davies, R. J., Mathias, S., Yang, J., Hobbs, R., & Wilson, M. (2017). Gas venting that bypasses the feather edge of marine hydrate, offshore Mauritania. Marine and Petroleum Geology, 88, 402-409. https://doi.org/10.1016/j.marpetgeo.2017.08.026

Methane can be released from the vast marine hydrate reservoirs that surround continents into oceans and perhaps the atmosphere. But how these pathways work within the global carbon cycle now and during a warmer world is only partially understood. He... Read More about Gas venting that bypasses the feather edge of marine hydrate, offshore Mauritania.

The role of pre-existing structures during rifting, continental breakup and transform system development, offshore West Greenland (2017)
Journal Article
Peace, A., McCaffrey, K., Imber, J., van Hunen, J., Hobbs, R., & Wilson, R. (2018). The role of pre-existing structures during rifting, continental breakup and transform system development, offshore West Greenland. Basin Research, 30(3), 373-394. https://doi.org/10.1111/bre.12257

Continental breakup between Greenland and North America produced the small oceanic basins of the Labrador Sea and Baffin Bay, which are connected via the Davis Strait, a region mostly comprised of continental crust. This study contributes to the deba... Read More about The role of pre-existing structures during rifting, continental breakup and transform system development, offshore West Greenland.

3-D cross-gradient joint inversion of seismic refraction and DC resistivity data (2017)
Journal Article
Shi, Z., Hobbs, R. W., Moorkamp, M., Tian, G., & Jiang, L. (2017). 3-D cross-gradient joint inversion of seismic refraction and DC resistivity data. Journal of Applied Geophysics, 141, 54-67. https://doi.org/10.1016/j.jappgeo.2017.04.008

We present a 3-D cross-gradient joint inversion algorithm for seismic refraction and DC resistivity data. The structural similarity between seismic slowness and resistivity models is enforced by a cross-gradient term in the objective function that al... Read More about 3-D cross-gradient joint inversion of seismic refraction and DC resistivity data.

Analysis of a Conductive Heat Flow Profile in the Ecuador Fracture Zone (2017)
Journal Article
Kolandaivelu, K. P., Harris, R. N., Lowell, R. P., Alhamad, A., Gregory, E., & Hobbs, R. (2017). Analysis of a Conductive Heat Flow Profile in the Ecuador Fracture Zone. Earth and Planetary Science Letters, 467, 120-127. https://doi.org/10.1016/j.epsl.2017.03.024

We report 18 new conductive heat flow measurements collected from a sediment pond located in the inactive part of the Ecuador Fracture Zone in the Panama Basin. The data were collected along an east–west transect coincident with a multi-channel seism... Read More about Analysis of a Conductive Heat Flow Profile in the Ecuador Fracture Zone.

An adaptive coupling strategy for joint inversions that use petrophysical information as constraints (2016)
Journal Article
Heincke, B., Jegen, M., Moorkamp, M., Hobbs, R., & Chen, J. (2017). An adaptive coupling strategy for joint inversions that use petrophysical information as constraints. Journal of Applied Geophysics, 136, 279-297. https://doi.org/10.1016/j.jappgeo.2016.10.028

Joint inversion strategies for geophysical data have become increasingly popular as they allow for the efficient combination of complementary information from different data sets. The algorithm used for the joint inversion needs to be flexible in its... Read More about An adaptive coupling strategy for joint inversions that use petrophysical information as constraints.

Markov Chain Monte Carlo inversion of temperature and salinity structure of an internal solitary wave packet from marine seismic data (2016)
Journal Article
Tang, Q., Hobbs, R., Zheng, C., Biescas, B., & Caiado, C. (2016). Markov Chain Monte Carlo inversion of temperature and salinity structure of an internal solitary wave packet from marine seismic data. Journal of Geophysical Research: Oceans, 121(6), 3692-3709. https://doi.org/10.1002/2016jc011810

Marine seismic reflection technique is used to observe the strong ocean dynamic process of nonlinear internal solitary waves (ISWs or solitons) in the near-surface water. Analysis of ISWs is problematical because of their transient nature and limitat... Read More about Markov Chain Monte Carlo inversion of temperature and salinity structure of an internal solitary wave packet from marine seismic data.

Marine seismic observation of internal solitary wave packets in the northeast South China Sea (2015)
Journal Article
Tang, Q., Hobbs, R., Wang, D., Sun, L., Zheng, C., Li, J., & Dong, C. (2015). Marine seismic observation of internal solitary wave packets in the northeast South China Sea. Journal of Geophysical Research: Oceans, 120(12), 8487-8503. https://doi.org/10.1002/2015jc011362

Recently the novel seismic oceanography method has been reported to be an effective way to study the energetic internal solitary waves (ISWs) in the northern South China Sea. An optimized seismic-oceanographic cruise was carried out to observe such n... Read More about Marine seismic observation of internal solitary wave packets in the northeast South China Sea.

Quantifying uncertainty in pore pressure estimation using Bayesian networks, with application to use of an offset well (2015)
Report
Oughton, R., Wooff, D., Hobbs, R., O'Connor, S., & Swarbrick, R. (2015). Quantifying uncertainty in pore pressure estimation using Bayesian networks, with application to use of an offset well. [No known commissioning body]

Pore pressure estimation is a crucial yet difficult problem in the oil industry. If unexpected overpressure is encountered while drilling it can result in costly challenges and leaked hydrocarbons. Prediction methods often use empirical porosity-base... Read More about Quantifying uncertainty in pore pressure estimation using Bayesian networks, with application to use of an offset well.

An irregular feather-edge and potential outcrop of marine gas hydrate along the Mauritanian margin (2015)
Journal Article
Davies, R., Yang, J., Mathias, S., & Hobbs, R. (2015). An irregular feather-edge and potential outcrop of marine gas hydrate along the Mauritanian margin. Earth and Planetary Science Letters, 423, 202-209. https://doi.org/10.1016/j.epsl.2015.04.013

The dissociation of marine hydrate that surrounds continental margins is thought to be an agent for past and future climate change. As the water depth decreases landwards, the base of the hydrate stability zone progressively shallows until hydrate ca... Read More about An irregular feather-edge and potential outcrop of marine gas hydrate along the Mauritanian margin.

Modelling Uncertainty in Pore Pressure Using Dynamic Bayesian Networks (2015)
Presentation / Conference Contribution
Oughton, R., Wooff, D., Swarbrick, R., & Hobbs, R. (2015). Modelling Uncertainty in Pore Pressure Using Dynamic Bayesian Networks. . https://doi.org/10.3997/2214-4609.201413296

Pore pressure prediction is vital when drilling a well, as unexpected overpressure can cause drilling challenges and uncontrolled hydrocarbon leakage. Predictions often use porosity-based techniques, relying on an idealised compaction trend and using... Read More about Modelling Uncertainty in Pore Pressure Using Dynamic Bayesian Networks.

On the Use of Fractal Surfaces to Understand Seismic Wave Propagation in Layered Basalt Sequences (2014)
Journal Article
Nelson, C. E., Hobbs, R. W., & Rusch, R. (2015). On the Use of Fractal Surfaces to Understand Seismic Wave Propagation in Layered Basalt Sequences. Pure and Applied Geophysics, 172(7), 1879-1892. https://doi.org/10.1007/s00024-014-0986-5

The aim of this study is to better understand how a layered basalt sequence affects the propagation of a seismic wave, which has implications for sub-basalt seismic imaging. This is achieved by the construction of detailed, realistic models of basalt... Read More about On the Use of Fractal Surfaces to Understand Seismic Wave Propagation in Layered Basalt Sequences.

Crustal constraint through complete model space screening for diverse geophysical datasets facilitated by emulation (2012)
Journal Article
Roberts, A., Hobbs, R., Goldstein, M., Moorkamp, M., Jegen, M., & Heincke, B. (2012). Crustal constraint through complete model space screening for diverse geophysical datasets facilitated by emulation. Tectonophysics, 572-573, 47-63. https://doi.org/10.1016/j.tecto.2012.03.006

Deep crustal constraint is often carried out using deterministic inverse methods, sometimes using seismic refraction, gravity and electromagnetic datasets in a complementary or “joint” scheme. With increasingly powerful parallel computer systems it i... Read More about Crustal constraint through complete model space screening for diverse geophysical datasets facilitated by emulation.