ORCID Profile
0000-0001-9644-4535
Current Organisation
University of Oxford
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Elsevier BV
Date: 10-2004
Publisher: Elsevier BV
Date: 03-2011
Publisher: Elsevier BV
Date: 07-2012
Publisher: Informa UK Limited
Date: 06-2009
Publisher: Springer Science and Business Media LLC
Date: 07-08-2017
Publisher: Informa UK Limited
Date: 09-2002
DOI: 10.1071/EG02161
Publisher: MDPI AG
Date: 31-07-2017
DOI: 10.3390/S17081753
Publisher: American Geophysical Union (AGU)
Date: 05-2012
DOI: 10.1029/2011JB008878
Publisher: Springer Science and Business Media LLC
Date: 25-07-2012
Publisher: Springer Science and Business Media LLC
Date: 23-03-2006
Publisher: Informa UK Limited
Date: 03-2000
DOI: 10.1071/EG00109
Publisher: American Geophysical Union (AGU)
Date: 08-2012
DOI: 10.1029/2012JC007974
Publisher: Springer Science and Business Media LLC
Date: 2012
Publisher: Springer Science and Business Media LLC
Date: 07-11-2013
Publisher: American Society of Civil Engineers (ASCE)
Date: 02-2004
Publisher: MDPI AG
Date: 22-03-2017
DOI: 10.3390/RS9030299
Publisher: Springer Science and Business Media LLC
Date: 09-11-2018
Publisher: Informa UK Limited
Date: 03-2009
Publisher: Springer Science and Business Media LLC
Date: 24-07-2014
Publisher: Elsevier BV
Date: 08-2007
Publisher: Informa UK Limited
Date: 08-1999
Publisher: Informa UK Limited
Date: 09-09-2022
Publisher: Informa UK Limited
Date: 2011
Publisher: Springer Science and Business Media LLC
Date: 19-11-2010
Publisher: Springer Science and Business Media LLC
Date: 27-09-2018
Publisher: Springer Science and Business Media LLC
Date: 24-11-2004
Publisher: Springer Berlin Heidelberg
Date: 2010
Publisher: Elsevier BV
Date: 12-1998
Publisher: Springer Science and Business Media LLC
Date: 23-04-2005
Publisher: Springer Science and Business Media LLC
Date: 14-07-2012
Publisher: Informa UK Limited
Date: 02-01-2018
Publisher: American Geophysical Union (AGU)
Date: 07-11-2019
DOI: 10.1029/2019GL084915
Abstract: The expansion of globally consistent satellite‐radar imagery presents new opportunities to measure Earth‐surface displacements on intercontinental scales. Yet global applications, including a complete assessment of the land contribution to relative sea‐level rise, first demand new solutions to unify relative satellite‐radar observations in a geocentric reference frame. The international network of Very Long Baseline Interferometry telescopes provides an existing, yet unexploited, link to unify satellite‐radar measurements on a global scale. Proof‐of‐concept experiments reveal the suitability of these instruments as high‐ litude reflectors for satellite radar and thus provide direct connections to a globally consistent reference frame. Automated tracking of radar satellites is easily integrated into telescope operations alongside ongoing schedules for geodesy and astrometry. Utilizing existing telescopes in this way completely avoids the need for additional geodetic infrastructure or ground surveys and is ready to implement immediately across the telescope network as a first step toward using satellite radar on a global scale.
Publisher: Springer Science and Business Media LLC
Date: 17-01-2018
Publisher: Springer Science and Business Media LLC
Date: 23-12-2018
Publisher: Informa UK Limited
Date: 06-2012
Publisher: Informa UK Limited
Date: 2012
Publisher: Informa UK Limited
Date: 10-2002
Publisher: Coastal Education and Research Foundation
Date: 05-2009
DOI: 10.2112/07-0972.1
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2020
Publisher: Society of Exploration Geophysicists
Date: 11-03-0007
Abstract: We have identified a gap in the literature on error propagation in the gravimetric terrain correction. Therefore, we have derived a mathematical framework to model the propagation of spatially correlated digital elevation model errors into gravimetric terrain corrections. As an ex le, we have determined how such an error model can be formulated for the planar terrain correction and then be evaluated efficiently using the 2D Fourier transform. We have computed 18.3 billion linear terrain corrections and corresponding error estimates for a 1 arc-second ([Formula: see text]) digital elevation model covering the whole of the Australian continent.
Publisher: Informa UK Limited
Date: 06-2011
Publisher: Informa UK Limited
Date: 12-2010
Publisher: Springer Science and Business Media LLC
Date: 10-04-0012
Publisher: MDPI AG
Date: 07-04-2021
DOI: 10.3390/RS13081422
Abstract: Earth observation (EO) satellites facilitate hazard monitoring and mapping over large-scale and remote areas. Despite Synthetic Aperture Radar (SAR) satellites being well-documented as a hazard monitoring tool, the uptake of these data is geographically variable, with the Australian continent being one ex le where the use of SAR data is limited. Consequently, less is known about how these data apply in the Australian context, how they could aid national hazard monitoring and assessment, and what new insights could be gleaned for the benefit of the international disaster risk reduction community. The European Space Agency Sentinel-1 satellite mission now provides the first spatially and temporally complete global SAR dataset and the first opportunity to use these data to systematically assess hazards in new locations. Using the ex le of Australia, where floods and uncontrolled bushfires, earthquakes, resource extraction (groundwater, mining, hydrocarbons) and geomorphological changes each pose potential risks to communities, we review past usage of EO for hazard monitoring and present a suite of new case studies that demonstrate the potential added benefits of SAR. The outcomes provide a baseline understanding of the potential role of SAR in national hazard monitoring and assessment in an Australian context. Future opportunities to improve national hazard identification will arise from: new SAR sensing capabilities, which for Australia includes a first-ever civilian EO capability, NovaSAR-1 the integration of Sentinel-1 SAR with other EO datasets and the provision of standardised SAR products via Analysis Ready Data and Open Data Cubes to support operational applications.
Publisher: Springer Science and Business Media LLC
Date: 18-04-2010
Publisher: Informa UK Limited
Date: 06-2009
Publisher: American Geophysical Union (AGU)
Date: 06-2013
DOI: 10.1002/JGRE.20101
Publisher: SAGE Publications
Date: 12-2005
DOI: 10.1177/08830738050200120501
Abstract: White-matter damage has been associated with the development of cerebral palsy in children born both prematurely and at term, and it has been suggested that intrauterine infection can contribute to the brain injury. However, the relative importance of age on white-matter injury following infectious exposure in utero remains unclear. In this study, fetal sheep were exposed to systemic endotoxemia by administration of Escherichia coli lipopolysaccharide (88.7 ± 7.7 ng/kg) at 65% or 85% of gestation. These gestational ages approximately correspond to human brain development in preterm and near-term infants respectively. White-matter injury was evaluated 3 days after lipopolysaccharide exposure with regard to microglia activation and loss of neurofilament and myelin basic protein. The expression of oligodendrocytes at different maturational stages was demonstrated in preterm and near-term fetuses with the oligodendroglial markers O4 and 2',3'-cyclic nucleotide 3'-phospodiesterase. Forty percent of the fetuses in the preterm group and 22% in the near-term group died within 8 hours of the endotoxin exposure. Three of six preterm and two of seven near-term surviving fetuses demonstrated pathologic changes in the brain with regard to increased microglia activation and loss of neurofilament staining. The number of activated microglia was enhanced in the subcortical white matter in both the preterm lipopolysaccharide-exposed fetuses (lipopolysaccharide: 235 ± 64 cells/mm 2 control: 72 ± 28 cells/mm 2 P = .0374) and the near-term fetuses (lipopolysaccharide: 180 ± 40 cells/mm 2 control 23 ± 16 cells/mm 2 P = .0152). There was a loss of neurofilament staining in both preterm fetuses (lipopolysaccharide: 2.20 ± 0.77 pixel units control: 0.20 ± 0.10 pixel units P = .0306) and near-term fetuses (lipopolysaccharide: 1.15 ± 0.48 pixel units control: 0.06 ± 0.06 pixel units P = .0285). O4-positive cells were detected at both gestational ages, whereas 2,3-cyclic nucleotide 3-phospodiesterase-positive cells and myelin basic protein staining were mainly detected in the near-term fetuses. In summary, we found white-matter injury in a proportion of both preterm and near-term fetuses after administration of lipopolysaccharide. These results are in agreement with clinical evidence suggesting that both preterm and term infants are at risk of periventricular leukomalacia in association with intrauterine infection. ( J Child Neurol 2005 :960—964).
Publisher: Oxford University Press (OUP)
Date: 04-2000
Publisher: Informa UK Limited
Date: 04-2003
Publisher: American Geophysical Union (AGU)
Date: 10-2015
DOI: 10.1002/2015JC011295
Publisher: Informa UK Limited
Date: 15-01-2019
Publisher: Informa UK Limited
Date: 04-2008
Publisher: Springer Science and Business Media LLC
Date: 20-09-2008
Publisher: Springer Science and Business Media LLC
Date: 03-11-2018
Publisher: Elsevier BV
Date: 12-2003
Publisher: American Society of Civil Engineers (ASCE)
Date: 11-2019
Publisher: Springer Science and Business Media LLC
Date: 11-06-2010
Publisher: Elsevier BV
Date: 10-2009
Publisher: American Geophysical Union (AGU)
Date: 06-2009
DOI: 10.1029/2008JB006239
Publisher: Informa UK Limited
Date: 06-2006
DOI: 10.1071/EG06175
Publisher: Springer Berlin Heidelberg
Date: 18-10-2011
Publisher: Informa UK Limited
Date: 06-2011
Publisher: Springer Science and Business Media LLC
Date: 02-04-2018
Publisher: Springer Science and Business Media LLC
Date: 15-04-2013
Publisher: American Geophysical Union (AGU)
Date: 08-2018
DOI: 10.1029/2018JB015705
Publisher: Informa UK Limited
Date: 2008
Publisher: Springer Berlin Heidelberg
Date: 10-08-2010
Publisher: Springer Science and Business Media LLC
Date: 19-10-2006
Publisher: Oxford University Press (OUP)
Date: 28-11-2019
DOI: 10.1093/GJI/GGZ536
Abstract: Quasigeoid models can be determined from surface gravity anomalies, so are sensitive to changes in the shape of the topography as well as changes in gravity. Here we present results of forward modelling gravity/quasigeoid changes from synthetic aperture radar data following the 2016 Mw 7.8 Kaikōura earthquake with land uplift of up to 10 m. We assess the impact of the topographic deformation on the reference surface of the New Zealand vertical datum in lieu of costly field gravity field measurements. The most significant modelled gravity and quasigeoid changes are—2.9 mGal and 5–7 mm, respectively. We compare our forward modelled gravity signal to terrestrial gravity observation data and show that differences between the data sets have a standard deviation of ±0.1 mGal. The largest modelled change in the quasigeoid is an order of magnitude smaller than the 57.7 mm estimated precision of the most recently computed NZGeoid model over the Kaikōura region. Modelled quasigeoid changes implied by this particular deformation event are not statistically significant with respect to estimated precision of the New Zealand quasigeoid model.
Publisher: Springer Berlin Heidelberg
Date: 26-07-2011
Publisher: Informa UK Limited
Date: 06-2006
Publisher: Springer Science and Business Media LLC
Date: 2008
Publisher: Informa UK Limited
Date: 04-2010
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Will Featherstone.