A5060829156- Underwater Acoustics Research
- Marine animal studies overview
- Marine and fisheries research
- Underwater Vehicles and Communication Systems
- Animal Vocal Communication and Behavior
- Maritime and Coastal Archaeology
- Water Quality Monitoring Technologies
- Coral and Marine Ecosystems Studies
- Seismic Imaging and Inversion Techniques
- Fish Ecology and Management Studies
- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Ichthyology and Marine Biology
- 3D Surveying and Cultural Heritage
- Methane Hydrates and Related Phenomena
- Coastal and Marine Dynamics
- Seismic Waves and Analysis
- Geophysical Methods and Applications
- Remote Sensing and LiDAR Applications
- Robotics and Sensor-Based Localization
- Geology and Paleoclimatology Research
- Maritime Navigation and Safety
- Wildlife Ecology and Conservation
- Identification and Quantification in Food
- Indoor and Outdoor Localization Technologies
Curtin University
2016-2025
CRC for Spatial information
2024
The Perth Canyon is a submarine canyon off Rottnest Island in Western Australia. It rich biodiversity general, and important as feeding resting ground for great whales on migration. Australia's Integrated Marine Observing System (IMOS) has moorings the monitoring its acoustical, physical biological oceanography. Data from these moorings, well weather data near-by Bureau of Meteorology station ship traffic Australian Maritime Safety Authority were correlated to characterise quantify marine...
The potential disturbance of dolphins from tourism boats has been widely discussed in the literature, terms both physical vessel presence and associated underwater noise. However, less attention paid to impact non-tourism vessels, despite these being much more widespread occurring greater numbers throughout coastal dolphin habitats. Indo-Pacific bottlenose (T. aduncus) community using Fremantle Inner Harbour, Western Australia, is exposed high levels traffic. To investigate whether...
Abstract Methods for processing multibeam echo-sounder (MBES) bathymetry data are well established, how-ever, there is no universal and established approach to interpretation of MBES backscatter data. The aim this paper (1) detail the different logging methods implemented in modern high-frequency systems used primarily shallow water; (2) describe suggest appropriate processing; (3) discuss likely errors artefacts expected from processing. These issues illustrated using collected with a Reson...
Several theoretical models of seafloor backscatter statistics developed over recent years show a reasonable agreement with experimental measurements made sonar systems. However, methods data collection and processing used in modern multibeam systems are often not taken into consideration when analyzing statistical characteristics observed data. Fluctuations various parameters, which can be derived from raw data, their properties, analyzed this paper using collected Reson SeaBat 8125 system...
Abstract Globally, coral reefs are under threat, with many exhibiting degradation or a shift towards algal-dominated regimes following marine heat waves, and other disturbance events. Marginal existing naturally extreme conditions, such as turbid water reefs, may be more resilient than their clear counterparts well offer some insight into how could look in the future climate change. Here, we surveyed 27 benthic habitats across an environmental stress gradient Exmouth Gulf region of north...
Beaked whales are a cryptic pelagic species, rarely sighted at sea. In ~2.5-year passive acoustic monitoring program on Australia’s Northwest Shelf, variety of marine mammal sounds were detected, including beaked whale (Ziphiidae) clicks. An automatic detection routine for clicks was developed, tested, and run these recordings. The workflow included: (1) the extraction impulsive signals from recordings based an auto-regression model, (2) calculation set features extracted signals, (3) binary...
Backscatter measurements collected with high-frequency multibeam echo-sounders (MBES) have been used to map the spatial distribution of seafloor types and properties in shallow waters. The methods for collection processing MBES backscatter data were considered Part 1 – Data acquisition (Parnum Gavrilov, 2011), published alongside this paper. aim 2 is describe main produce maps sea floor free from angular artefacts, classify based on bathymetry analysis. These are illustrated using a dataset...
Measurements of low-frequency sound propagation over the areas Australian continental shelf, where bottom sediments consist primarily calcarenite, have revealed that acoustic transmission losses are generally much higher than those observed other shelves and remain relatively low only in a few narrow frequency bands. This paper considers this phenomenon provides physical interpretation terms normal modes shallow water layered elastic seabed with shear wave speed comparable to but lower...
There is growing awareness of underwater noise in a variety marine habitats, and how such may adversely affect species. This particular concern for acoustically-specialised species, as dolphins. In order to ascertain the potential impacts anthropogenic on these animals, baseline information required defining soundscape dolphin habitats. The Swan-Canning River system Western Australia flows through city Perth, experiences numerous activities. Despite this, river home community Indo-Pacific...
Reliable methods for identification of individual animals are advantageous ecological studies population demographics and movement patterns. Photographic identification, based on distinguishable patterns, unique shapes, or scars, is an effective technique already used many species. We tested whether photographs whisker spot patterns could be to discriminate among Australian sea lion (Neophoca cinerea). Based images 53 lions, we simulated 5,000 before calculating the probability duplication...
We report the discovery and identification of five ancient stone artefacts associated with a submerged freshwater spring at underwater archaeological site WH1 in Murujuga (Dampier Archipelago), Western Australia. A limiting date applied to based on timing inundation suggests it was occupied Late Pleistocene or Early Holocene. The is situated well below intertidal zone having been recorded 14 m depth Flying Foam Passage. This highlights high potential these springs as survey targets. discuss...
Similar to geophysical and anthropogenic noise, biological contributions soundscapes vary considerably in frequency, time, intensity. Fish choruses are a perfect example, contributing significantly marine noise used here as an analogue for variations soundscapes. Their species-characteristic signals thus, so do their choruses, which can raise ambient levels by up tens of decibels, prolonged periods. Multi-species occur, with varying degrees temporal frequency partitioning, or none at all....
Cetaceans are iconic predators that serve as important indicators of marine ecosystem health. The Bremer Sub-Basin, south-western Australia, supports a diverse cetacean community including the largest documented aggregation killer whales (Orcinus orca) in Australian waters. Knowledge distributions is critical for managing area’s thriving ecotourism industry, yet largely sporadic. Here we combined aerial with opportunistic ship-borne surveys during 2015–2017 to describe occurrence multiple...