Luke Wallace
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View article: Evaluation and interpretation of landscapes from satellite imagery
Evaluation and interpretation of landscapes from satellite imagery Open
Satellite imagery allows us to view landscapes from a bird’s eye view, providing a new dimension in appreciating the environments we inhabit. This alternative perspective has the potential to shape individual perceptions of landscapes and …
View article: Observing the full ocean volume using Deep Argo floats
Observing the full ocean volume using Deep Argo floats Open
The ocean is the main heat reservoir in Earth’s climate system, absorbing most of the top-of-the-atmosphere excess radiation. As the climate warms, anomalously warm and fresh ocean waters in the densest layers formed near Antarctica spread…
View article: FOR-instance: a UAV laser scanning benchmark dataset for semantic and instance segmentation of individual trees
FOR-instance: a UAV laser scanning benchmark dataset for semantic and instance segmentation of individual trees Open
The FOR-instance dataset (available at https://doi.org/10.5281/zenodo.8287792) addresses the challenge of accurate individual tree segmentation from laser scanning data, crucial for understanding forest ecosystems and sustainable managemen…
View article: FOR-instance: a UAV laser scanning benchmark dataset for semantic and instance segmentation of individual trees
FOR-instance: a UAV laser scanning benchmark dataset for semantic and instance segmentation of individual trees Open
The challenge of accurately segmenting individual trees from laser scanning data hinders the assessment of crucial tree parameters necessary for effective forest management, impacting many downstream applications. While dense laser scannin…
View article: FOR-instance: a UAV laser scanning benchmark dataset for semantic and instance segmentation of individual trees
FOR-instance: a UAV laser scanning benchmark dataset for semantic and instance segmentation of individual trees Open
The challenge of accurately segmenting individual trees from laser scanning data hinders the assessment of crucial tree parameters necessary for effective forest management, impacting many downstream applications. While dense laser scannin…
View article: A New Spatio-Temporal Selection Method for Estimating Upwelling Medium-Wave Radiation
A New Spatio-Temporal Selection Method for Estimating Upwelling Medium-Wave Radiation Open
Accurate estimates of the unperturbed state of upwelling radiation from the earth’s surface are vital to the detection and classification of anomalous radiation values. Determining radiative anomalies in the landscape is critical for isola…
View article: Differences in Canopy Cover Estimations from ALS Data and Their Effect on Fire Prediction
Differences in Canopy Cover Estimations from ALS Data and Their Effect on Fire Prediction Open
Canopy cover is a primary attribute used in empirical wildfire models for certain fuel types. Accurate estimation of canopy cover is a key to ensuring accurate prediction of fire spread and behaviour in these fuels. Airborne Laser Scanning…
View article: The Effect of Surrounding Vegetation on Basal Stem Measurements Acquired Using Low-Cost Depth Sensors in Urban and Native Forest Environments
The Effect of Surrounding Vegetation on Basal Stem Measurements Acquired Using Low-Cost Depth Sensors in Urban and Native Forest Environments Open
Three colour and depth (RGB-D) devices were compared, to assess the effect of depth image misalignment, resulting from simultaneous localisation and mapping (SLAM) error, due to forest structure complexity. Urban parkland (S1) was used to …
View article: Up-Scaling Fuel Hazard Metrics Derived from Terrestrial Laser Scanning Using a Machine Learning Model
Up-Scaling Fuel Hazard Metrics Derived from Terrestrial Laser Scanning Using a Machine Learning Model Open
The characterisation of fuel distribution across heterogeneous landscapes is important for wildfire mitigation, validating fuel models, and evaluating fuel treatment outcomes. However, efficient fuel mapping at a landscape scale is challen…
View article: Assessing protected area networks in the conservation of elephants (Elephas Maximus) in Sri Lanka
Assessing protected area networks in the conservation of elephants (Elephas Maximus) in Sri Lanka Open
Protected areas play a crucial role in the conservation and management of wildlife, but land use and land cover change (LULCC) threatens the status of protected areas. Sri Lanka has a history of severe human–elephant conflict (HEC). In the…
View article: Vulnerability of Denman Glacier to Ocean Heat Flux Revealed by Profiling Float Observations
Vulnerability of Denman Glacier to Ocean Heat Flux Revealed by Profiling Float Observations Open
Denman Glacier, which drains a marine‐based sector of the East Antarctic Ice Sheet with an ice volume equivalent to 1.5 m of global sea level rise, has accelerated and undergone grounding line retreat in recent decades. A deep trough and r…
View article: Terrestrial Laser Scanning: An Operational Tool for Fuel Hazard Mapping?
Terrestrial Laser Scanning: An Operational Tool for Fuel Hazard Mapping? Open
Fuel hazard estimates are vital for the prediction of fire behaviour and planning fuel treatment activities. Previous literature has highlighted the potential of Terrestrial Laser Scanning (TLS) to be used to assess fuel properties. Howeve…
View article: Combining Object-Based Machine Learning with Long-Term Time-Series Analysis for Informal Settlement Identification
Combining Object-Based Machine Learning with Long-Term Time-Series Analysis for Informal Settlement Identification Open
Informal settlement mapping is essential for planning, as well as resource and utility management. Developing efficient ways of determining the properties of informal settlements (when, where, and who) is critical for upgrading services an…
View article: Differences in canopy cover estimations from ALS data and their effect on fire predictions
Differences in canopy cover estimations from ALS data and their effect on fire predictions Open
Canopy cover is a primary attribute used in empirical wildfire models for certain fuel types. Accurate estimation of canopy cover is key to ensuring accurate prediction of fire spread and behaviour in these fuels. Airborne Laser Scanning (…
View article: The Potential of Low-Cost 3D Imaging Technologies for Forestry Applications: Setting a Research Agenda for Low-Cost Remote Sensing Inventory Tasks
The Potential of Low-Cost 3D Imaging Technologies for Forestry Applications: Setting a Research Agenda for Low-Cost Remote Sensing Inventory Tasks Open
Limitations with benchmark light detection and ranging (LiDAR) technologies in forestry have prompted the exploration of handheld or wearable low-cost 3D sensors (<2000 USD). These sensors are now being integrated into consumer devices, su…
View article: Generating a framework for fuel inputs to future fire behaviour models: reviews, recommendations and remote sensing
Generating a framework for fuel inputs to future fire behaviour models: reviews, recommendations and remote sensing Open
Land managers use models to understand potential fire behaviour, which provide insight into the social, economic and environmental implications of fire. Although combustion is a fundamental process, numerous fire behaviour models exist acr…
View article: Deep Argo Reveals Bottom Water Properties and Pathways in the Australian‐Antarctic Basin
Deep Argo Reveals Bottom Water Properties and Pathways in the Australian‐Antarctic Basin Open
Changes in properties and quantity of Antarctic Bottom Water (AABW) have major implications for the climate system, through sequestration of heat and carbon into, and ventilation of, the abyssal ocean. Yet, it remains one of the most diffi…
View article: A comparison between TLS and UAS LiDAR to represent eucalypt crown fuel characteristics
A comparison between TLS and UAS LiDAR to represent eucalypt crown fuel characteristics Open
Advances in fire behaviour modelling provide a catalyst for the development of next generation fuel inputs. Fire simulations underpin risk and consequence mapping and inform decisions regarding ecological and social impacts of different fi…
View article: Effect of fuel spatial resolution on predictive wildfire models
Effect of fuel spatial resolution on predictive wildfire models Open
Computational models of wildfires are necessary for operational prediction and risk assessment. These models require accurate spatial fuel data and remote sensing techniques have ability to provide high spatial resolution raster data for l…
View article: High-Resolution Estimates of Fire Severity—An Evaluation of UAS Image and LiDAR Mapping Approaches on a Sedgeland Forest Boundary in Tasmania, Australia
High-Resolution Estimates of Fire Severity—An Evaluation of UAS Image and LiDAR Mapping Approaches on a Sedgeland Forest Boundary in Tasmania, Australia Open
With an increase in the frequency and severity of wildfires across the globe and resultant changes to long-established fire regimes, the mapping of fire severity is a vital part of monitoring ecosystem resilience and recovery. The emergenc…
View article: A new drone laser scanning benchmark dataset for characterization of single-tree and forest biophysical properties
A new drone laser scanning benchmark dataset for characterization of single-tree and forest biophysical properties Open
<p>Survey-grade drone laser scanners suitable for unmanned aerial vehicles (UAV-LS) allow the efficient collection of finely detailed three-dimensional information of tree structures. This data type allows forests to be resolved into…
View article: Terrestrial Image-Based Point Clouds for Mapping Near-Ground Vegetation Structure: Potential and Limitations
Terrestrial Image-Based Point Clouds for Mapping Near-Ground Vegetation Structure: Potential and Limitations Open
Site-specific information concerning fuel hazard characteristics is needed to support wildfire management interventions and fuel hazard reduction programs. Currently, routine visual assessments provide subjective information, with the resu…
View article: Data from: Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic continental shelf
Data from: Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic continental shelf Open
The data used in the publication Wallace et al. 2020. Three types of data are including;1. Spreadsheets (FLOAT_position_data.xlsx) for the seven floats analyzed in the paper containing positioning information2. Matlab mat files (floatFLOAT…
View article: Digitised Iceberg locations
Digitised Iceberg locations Open
Digitised iceberg locations used in the float path shown in Figure 3 or Wallace et al.
View article: Argo Float Spreadsheets
Argo Float Spreadsheets Open
Spreadsheets describing cycle locations of 7 Argo floats deployed in the Mertz polunya. Spreadsheets contain information that can also be extracted from netcdf files from an Argo GDAC.
View article: Argo Float Mat files
Argo Float Mat files Open
Matlab mat files describing cycle locations of 7 Argo floats deployed in the Mertz polunya. These files contain information that can also be extracted from netcdf files from an Argo GDAC.