A5002762344- Ionosphere and magnetosphere dynamics
- GNSS positioning and interference
- Earthquake Detection and Analysis
- Geophysics and Gravity Measurements
- Solar and Space Plasma Dynamics
- Atmospheric Ozone and Climate
- earthquake and tectonic studies
- Oceanographic and Atmospheric Processes
- Geomagnetism and Paleomagnetism Studies
- Metallurgical Processes and Thermodynamics
- Atmospheric aerosols and clouds
- Meteorological Phenomena and Simulations
- Gas Dynamics and Kinetic Theory
- Combustion and Detonation Processes
- Fluid Dynamics and Turbulent Flows
- Spacecraft Design and Technology
- Health, Environment, Cognitive Aging
- Big Data Technologies and Applications
- Spaceflight effects on biology
- Radioactivity and Radon Measurements
- Radiation Therapy and Dosimetry
MIT University
2020-2025
RMIT University
2018-2025
RMIT Europe
2023
ACT Government
2023
Wroclaw University of Environmental and Life Sciences
2022
Centrum Badań Kosmicznych
2018
University of Newcastle Australia
2014-2016
Abstract We report our analysis of ionospheric disturbances from the 15 January 2022 Tonga volcano eruption, using GPS data International GNSS Service network and ionosonde in Australian sector. Wave fluctuations with amplitudes ∼1 TECU altitude variations ∼100 km were observed data, respectively. In near‐field region around shortly after reveals that had an azimuthally anisotropic velocity profile, a peculiar minimum southwestward direction. Close resemblance is identified between profile...
Ultralow frequency (ULF: 0.001–5 Hz) magnetic records have recently been used in the search for short‐term earthquake prediction methods. The separation of local and global effects is greatest challenge this research area. Geomagnetic indices are often to predict ULF behavior where it assumed that increases a geomagnetic index correspond with an increase power. This paper examines relationships between power, spectral polarization ratio, relationship ratio solar wind parameters. power ULF,...
Abstract Predicting the daily variability of Equatorial Plasma Bubbles (EPBs) is an ongoing scientific challenge. Various methods for predicting EPBs have been developed, however, research community yet to scrutinize evaluating and comparing these prediction models/techniques. In this study, 12 months co‐located GPS UHF scintillation observations spanning South America, Atlantic/Western Africa, Southeast Asia, Pacific sectors are used evaluate Generalized Rayleigh‐Taylor (R‐T) growth rates...
Centimetre-level accurate ionospheric corrections are required for a high accuracy and rapid convergence of Precise Point Positioning (PPP) GNSS positioning solutions. This research aims to evaluate the local/regional delay model using linear interpolation method across Australia. The is assessed as function both different latitudinal regions number spatial density Continuously Operating Reference Stations (CORSs). Our shows that, local region 5° latitude ×10° longitude in mid-latitude...
Abstract The Hunga Tonga Volcano eruption launched a myriad of atmospheric waves that have been observed to travel around the world several times. These generated traveling ionospheric disturbances (TIDs) in ionosphere, which are known adversely impact radio applications such as Global Navigation Satellite Systems (GNSS). One GNSS application is Precise Point Positioning (PPP), can achieve cm‐level accuracy using single receiver, following typical convergence time 30 min 1 hr. A network...
Abstract The space environment near Earth is constantly subjected to changes in the solar wind flow generated at Sun. Examples of this variability are occurrence powerful disturbances, such as coronal mass ejections (CMEs). impact CMEs on Earth's magnetosphere perturbs geomagnetic field causing storms. Such extremely variable fields trigger effects measurable not only geospace but also ionosphere, upper atmosphere, and ground. For example, during extreme events, rapidly changing generate...
This contribution is the first of a two-part investigation into an unseasonal post-sunset equatorial F-region irregularity (EFI) event over Southeast Asian region on evening 28 July 2014. Ground-based GPS scintillation data, space-based radio occultation (RO) and ionosonde data show existence EFIs shortly after sunset spanning 30° in longitude 40° latitude, centered geomagnetic equator. EFI was observed during time year when plasma bubbles (EPBs) are very infrequent sector. RO shows that...
Abstract Global Navigation Satellite System fast precise positioning can be achieved with accurate ionospheric corrections computed from an adequate number of GNSS stations in a local region. In low-latitude regions, the presence electron density gradients over short distances lead to outliers map and decrease its accuracy. this study, we explored outlier detection correction mapping through statistical residuals during four-month test 2021. Our findings indicate that model conform Laplace...
Abstract An artificial neural network (ANN) method for the modeling of global topside ionospheric vertical scale height (VSH) using electron density profiles retrieved from Global Navigation Satellite Systems radio occultation (RO) data is proposed in this study. The study are 80,124 VSHs derived events randomly selected 9 years Constellation Observing System Meteorology, Ionosphere, and Climate RO measurements 144,530 16 sounder both Aluoette‐1/2 ISIS‐1/2 satellites during 1962–1978 used...
Abstract The goal of this study is to present a new model for global topside electron temperature ( ) using deep neural network (DNN) that trained measurements from incoherent scatter radars (ISRs). This also an investigation into whether can be used generate the in ionosphere GNSS ionospheric radio occultation (GNSS‐IRO) data as input. ISR one most reliable and long‐term sources measure density plasma information simultaneously. However, drawback databases relatively poor spatial coverage...
Abstract It is often stated that high‐frequency radars experience a loss of backscatter during geomagnetic storm events. The occurrence 25 intense storms was examined using data from the Bruny Island and Kodiak superposed epoch analysis. found while reduction occurred in middle to far ranges, there an increase amount close range following onset. Ray tracing showed enhanced charge density E region can reduce chance F backscatter. also shown cannot be explained by D absorption. Using...
Abstract An unseasonal equatorial plasma bubble (EPB) event over South‐East Asia was observed on July 22, 2014 that has not been studied before. investigation into this is presented with the 26th July, as a comparison, non‐bubble day. The 22nd EPB occurred in late post‐sunset sector and associated small upward drift. This highlighted using new filter SCINDA S4 data. Ionosonde data show sporadic E present during growth period for event. Modeling results from Thermosphere‐Ionosphere...
Space weather is a key component in the daily operation of many technological systems and applications, including large-scale power grids, high-frequency radio systems, satellite systems. As international space sector continues to boom, accessible products, tools education are increasingly important ensure that actors (both old new) equipped with knowledge how influences their activities applications. At RMIT University, initiative was taken develop Weather Prediction Laboratory exercise for...
The Hunga Tonga Volcano eruption launched a myriad of atmospheric waves that have been observed to travel around the world several times. These generated Traveling Ionospheric Disturbances (TIDs) in ionosphere, which are known adversely impact radio applications such as Global Navigation Satellite Systems (GNSS). One GNSS application is Precise Point Positioning (PPP), can achieve cm-level accuracy using single receiver, following typical convergence time 30 mins 1 hour. A network ionosondes...
Abstract Global Navigation Satellite System fast precise positioning can be achieved with accurate ionospheric corrections computed from an adequate number of GNSS stations in a local region. Our previous study showed that using 15 well-distributed within 5° latitude x 10° longitude region, regression model for achieve mean accuracy 5 cm. In low-latitude regions, the presence electron density gradients over short distances lead to outliers map and decrease its accuracy. this study, we...