A5050268526- Geophysics and Gravity Measurements
- GNSS positioning and interference
- Inertial Sensor and Navigation
- Remote Sensing and LiDAR Applications
- Ionosphere and magnetosphere dynamics
- 3D Surveying and Cultural Heritage
- Ocean Waves and Remote Sensing
- Cryospheric studies and observations
- Robotics and Sensor-Based Localization
- Flood Risk Assessment and Management
- Hydrology and Watershed Management Studies
- Arctic and Antarctic ice dynamics
- Oceanographic and Atmospheric Processes
- Geomagnetism and Paleomagnetism Studies
- Spacecraft Design and Technology
- Landslides and related hazards
- Hydrology and Drought Analysis
- Geology and Paleoclimatology Research
- Parallel Computing and Optimization Techniques
- Fermentation and Sensory Analysis
- Power Systems Fault Detection
- Information Systems and Technology Applications
- Wine Industry and Tourism
- Digital Media and Visual Art
- Meteorological Phenomena and Simulations
Newcastle University
2007-2024
University of South Carolina
2015-2019
University of Newcastle Australia
2012
University of Strathclyde
2010
University of Bath
1999
A change detection and thresholding methodology has been adapted from previous studies to determine the extent of flooding for 13 Sentinel‐1 synthetic aperture radar images captured during floods winter 2015–2016 in Yorkshire, UK . Both available polarisations, VH VV , have processed allow a comparison their respective accuracy delineating surface water. Peak flood extents are found on 29 December 2015 aftermath storms Eva Frank. Results validated against Sentinel‐2 optical image, with both...
Abstract Satellite altimetry is routinely used to provide levels for oceans or large inland water bodies from space. By utilizing retracking schemes specially designed waters, meaningful river stages can also be recovered when standard techniques fail. Utilizing retracked waveforms ERS‐2 and ENVISAT along the Mekong, comparisons against observed stage measurements show that altimetric have a root mean square error (RMSE) of 0·44–0·65 m 0·46–0·76 ERS‐2. For many applications, however,...
A methodology is developed to estimate daily river discharge at an ungauged site using remote sensing data. Use made of ERS-2 and ENVISAT satellite altimetry provide a time series channel stage levels longitudinal slope Landsat imagery range widths over 50 km reach river. The data are substituted into the Bjerklie et al. (2003) equation, which based on Manning's resistance equation has been global database hydraulic information measurements. Our applied three locations Mekong Ob Rivers...
Abstract. Unmanned aerial vehicles (UAVs) can provide observations of high spatio-temporal resolution to enable operational landslide monitoring. In this research, the construction digital elevation models (DEMs) and orthomosaics from UAV imagery is achieved using structure-from-motion (SfM) photogrammetric procedures. The study examines additional value that morphological attribute openness, amongst others, surface deformation analysis. Image-cross-correlation functions DEM subtraction...
Abstract Landslides represent hazardous phenomena, often with significant implications. Monitoring landslides time‐series surface observations can indicate failure. Unmanned aerial vehicles (UAVs) employing compact digital cameras, in conjunction structure‐from‐motion (SfM) and multi‐view stereo (MVS) image processing approaches, have become commonplace the geoscience research community. These methods offer relatively low‐cost, flexible solutions for many geomorphological monitoring...
Landslides are hazardous events with often disastrous consequences. Monitoring landslides observations of high spatio-temporal resolution can help mitigate such hazards. Mini unmanned aerial vehicles (UAVs) complemented by structure-from-motion (SfM) photogrammetry and modern per-pixel image matching algorithms deliver a time-series landslide elevation models in an automated inexpensive way. This research investigates the potential mini UAV, equipped Panasonic Lumix DMC-LX5 compact camera,...
Abstract. Landslides are hazardous events with often disastrous consequences. Monitoring landslides observations of high spatio-temporal resolution can help mitigate such hazards. Mini unmanned aerial vehicles (UAVs) complemented by structure-from-motion (SfM) photogrammetry and modern per-pixel image matching algorithms deliver a time-series landslide elevation models in an automated inexpensive way. This research investigates the potential mini UAV, equipped Panasonic Lumix DMC-LX5 compact...
Geophysical interpretation of GRACE gravity fields has provided estimates Antarctic ice mass change. Such analyses rely on proper consideration ocean tidal effects through the models CSR4 and FES2004. In general, mis‐modeling constituents with aliasing period less than 30 day will not have significant impact However, for constituents, such as K1, K2, S2, is sufficiently large to potentially compromise long‐term variability studies. Here we quantify over Antarctica by simulating signatures...
Variations in water levels of seasonally ice-covered subarctic lakes are indicators environmental and climatic change. Satellite altimetry enables remote sensing these lakes, but the lake phenology is problematic as radar reflection surfaces include water, snow, ice. Reflection from multiple gives rise to two-peak waveforms across lakes. Misinterpretation altimetric height has caused extracted be low compared with gauge data. In this study, a modified retracker used determine heights first...
This paper proposes a centralised Loss of Mains (LOM) detection technique to be implemented with new network management system (NMS), the AuRA-NMS, an autonomous regional active currently being developed in UK through partnership between several universities, two distribution operators (DNO) and ABB. Unlike existing inter-tripping schemes, proposed method does not use predetermined association generator circuit breaker one (or more) utility breakers but utilises flexible algorithm. approach...
The authors present a series of tutorials which consider the Global Positioning System (GPS) and its application in field electric power systems. first tutorial article is intended as an introduction to GPS-it not specific systems applications-and gives reader insight into operation GPS understanding many acronyms used this area. Subsequent will cover existing applications future GPS.
Stone adzes (toki) made from greywacke are a characteristic feature of late ‘Classic Maori’ material culture in Aotearoa/New Zealand, particularly the North Island, but despite widespread natural distribution this sedimentary rock type few archaeological source sites have been identified. The pre-European production alluvial greywacke-dominated gravels inland Taranaki area, south-western was first reported 1971. We present new information on nature, extent, and composition these gravels,...
Changes in J2, resulting from past and present changes Earth’s climate, are traditionally observed by Satellite Laser ranging (SLR). Assuming an elastic Earth, it is possible to infer J2 shape GPS. We compare estimates of non-secular GPS, SLR, GRACE a load model. The GPS SLR annual signals agree but different (16%) the Subtraction model removes variation GRACE, semi-annual long-term highly correlated, better correlated with loading 1998 anomaly series not completely series, suggesting that...