Ocean Glider Observations Around Australia

Pattiaratchi, Charitha; Woo, Lai; Thomson, Paul; Hong, Kah Kiat; Stanley, Daniel Jean

doi:10.5670/oceanog.2017.226

Cited by 15 publications

(13 citation statements)

References 11 publications

(11 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With Argo floats not sampling the shallow regions, there are no operational global in-situ observations of coastal T and S, but regional efforts have been implemented over the years using both ship-based and moored platforms (e.g., data collection in many coastal regions set up under the U.S. Integrated Ocean Observing System; https://ioos.noaa.gov/regions/) and more recently glider technology (e.g., https://gliders.ioos.us/; Pattiaratchi et al 2017;Rudnick et al 2017;Heslop et al 2012). One challenge and perhaps a worthy long-term focus will be to link available T and S data to sea level data at the local level, particularly as coastal observing systems attain operational status.…”

Section: Steric Sea-level Observationsmentioning

confidence: 99%

Coastal Sea Level and Related Fields from Existing Observing Systems

et al. 2019

View full text Add to dashboard Cite

We review the status of current sea-level observing systems with a focus on the coastal zone. Tide gauges are the major source of coastal sea-level observations monitoring most of the world coastlines, although with limited extent in Africa and part of South America. The longest tide gauge records, however, are unevenly distributed and mostly concentrated along the European and North American coasts. Tide gauges measure relative sea level but the monitoring of vertical land motion through highprecision GNSS, despite being essential to disentangle land and ocean contributions in tide gauge records, is only available in a limited number of stations (25% of tide gauges have a GNSS station at less than 10 km). Other data sources are new in-situ observing systems fostered by recent progress in GNSS data processing (e.g. GPS reflectometry, GNSS-towed platforms) and coastal altimetry currently measuring sea level as close as 5 km from the coastline. Understanding observed coastal sea level also requires information on various contributing processes, and we provide an overview of some other relevant observing systems, including those on (offshore and coastal) wind-waves and water density and mass changes.

show abstract

Section: Steric Sea-level Observationsmentioning

confidence: 99%

Coastal Sea Level and Related Fields from Existing Observing Systems

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Industry ROVs offer a novel approach to oceanographic investigation. Traditional ship-based oceanographic sampling has been supplemented by autonomous vehicles such as Argo buoys and ocean gliders (Gould and Turton, 2006;Pattiaratchi et al, 2017). ROVs also provide a platform for collection of physical oceanographic data that can inform on the behaviour of organisms through the water column and in the deeper ocean observed through ROV footage.…”

Section: Q3 What Are the Physical Processes Within The Deep Ocean?mentioning

confidence: 99%

Eyes in the sea: Unlocking the mysteries of the ocean using industrial, remotely operated vehicles (ROVs)

Macreadie

McLean

Thomson

et al. 2018

Science of The Total Environment

Self Cite

View full text Add to dashboard Cite

For thousands of years humankind has sought to explore our oceans. Evidence of this early intrigue dates back to 130,000BCE, but the advent of remotely operated vehicles (ROVs) in the 1950s introduced technology that has had significant impact on ocean exploration. Today, ROVs play a critical role in both military (e.g. retrieving torpedoes and mines) and salvage operations (e.g. locating historic shipwrecks such as the RMS Titanic), and are crucial for oil and gas (O&G) exploration and operations. Industrial ROVs collect millions of observations of our oceans each year, fueling scientific discoveries. Herein, we assembled a group of international ROV experts from both academia and industry to reflect on these discoveries and, more importantly, to identify key questions relating to our oceans that can be supported using industry ROVs. From a long list, we narrowed down to the 10 most important questions in ocean science that we feel can be supported (whole or in part) by increasing access to industry ROVs, and collaborations with the companies that use them. The questions covered opportunity (e.g. what is the resource value of the oceans?) to the impacts of global change (e.g. which marine ecosystems are most sensitive to anthropogenic impact?). Looking ahead, we provide recommendations for how data collected by ROVs can be maximised by higher levels of collaboration between academia and industry, resulting in win-win outcomes. What is clear from this work is that the potential of industrial ROV technology in unravelling the mysteries of our oceans is only just beginning to be realised. This is particularly important as the oceans are subject to increasing impacts from global change and industrial exploitation. The coming decades will represent an important time for scientists to partner with industry that use ROVs in order to make the most of these 'eyes in the sea'.

show abstract

“…We used high-resolution temperature, salinity, and density data from Teledyne Webb Research Slocum Electric Gliders (Falmouth, MA, USA) [50] that were deployed at Two Rocks in May 2016 to repeat cross-shelf transects and verify the ability of the model to reproduce DSWCs at this site. All gliders were operated by the ocean glider facility located at the University of Western Australia with data available through the Australian Ocean Data Network (https://portal.aodn.org.au).…”

Section: Field Observationsmentioning

confidence: 99%

“…All gliders were operated by the ocean glider facility located at the University of Western Australia with data available through the Australian Ocean Data Network (https://portal.aodn.org.au). The Slocum Gliders for this experiment collected data (temperature, salinity, density, fluorescence, suspended sediment, and dissolved oxygen) from the surface to seabed to a maximum depth of 200 m traversing at a mean speed of 25 km per day [50]. Gliders use buoyancy control whilst moving forward to the target destination to navigate their way to a series of pre-programmed waypoints using GPS, internal dead reckoning, and altimeter measurements.…”

Section: Field Observationsmentioning

confidence: 99%

“…Gliders use buoyancy control whilst moving forward to the target destination to navigate their way to a series of pre-programmed waypoints using GPS, internal dead reckoning, and altimeter measurements. The gliders were equipped with a Sea-Bird Scientific (Bellevue, WA, USA) pumped CTD (conductivity-temperature-depth) sensor, a WETLabs (Bellevue, WA, USA) 3 parameter optical sensor (which measured chlorophyll fluorescence, coloured dissolved organic matter and backscatter at 660 nm) and an Aanderaa (Nesttun, Norway) dissolved oxygen Optode [50]. All the sensors were sampled at 4 Hz (which yielded measurements~7 cm in the vertical).…”

Section: Field Observationsmentioning

confidence: 99%

See 1 more Smart Citation

Spatial and Temporal Variability of Dense Shelf Water Cascades along the Rottnest Continental Shelf in Southwest Australia

Mahjabin

Pattiaratchi

Hetzel

et al. 2019

JMSE

Self Cite

View full text Add to dashboard Cite

Along the majority of Australian shallow coastal regions, summer evaporation increases the salinity of shallow waters, and subsequently in autumn/winter, the nearshore waters become cooler due to heat loss. This results in the formation of horizontal density gradients with density increasing toward the coast that generates gravity currents known as dense shelf water cascades (DSWCs) flowing offshore along the sea bed. DSWCs play important role in ecological and biogeochemical processes in Australian waters through the transport of dissolved and suspended materials offshore. In this study a numerical ocean circulation model of Rottnest continental shelf, validated using simultaneous ocean glider and mooring data, indicated that the passage of cold fronts associated with winter storms resulted in rapid heat loss through evaporative cooling. These conditions resulted in enhancement of the DSWCs due to modifications of the cross-shelf density gradient and wind effects. Specifically, onshore (offshore) directed winds resulted in an enhancement (inhibition) of DSWCs due to downwelling (vertical mixing). Consequently, the largest DSWC events occurred during the cold fronts when atmospheric temperatures reinforced density gradients and onshore winds promoted downwelling that enhanced DSWCs. Advection of DSWCs was also strongly influenced by the wind conditions, with significantly more transport occurring along-shelf compared to cross-shelf.

show abstract

Ocean Glider Observations Around Australia

Cited by 15 publications

References 11 publications

Coastal Sea Level and Related Fields from Existing Observing Systems

Coastal Sea Level and Related Fields from Existing Observing Systems

Eyes in the sea: Unlocking the mysteries of the ocean using industrial, remotely operated vehicles (ROVs)

Spatial and Temporal Variability of Dense Shelf Water Cascades along the Rottnest Continental Shelf in Southwest Australia

Contact Info

Product

Resources

About