Computer Vision-based Detection of Fish from Acoustic Backscatter Time Series

ASL Environmental Sciences has announced the awarding of a Natural Sciences and Engineering Research Council (NSERC) Engage Grant for the development of new automated or semi-automated analysis tools for Acoustic Zooplankton Fish Profiler (AZFP) data with the University of Victoria and ASL. This collaboration will be led by Dr Alexandra Branzan Albu's research group from the Electrical and Computer Engineering Department of the University of Victoria along with ASL acoustic and remote sensing specialists. Additionally, AZFP data will be provided by Dr Stéphane Gauthier of the Department of Fisheries and Oceans Canada, who will also bring expertise in the areas... (read more)
2019-02-19 10:01:51

Web GIS Improves Lidar Collection Response Time

The remarkable capabilities of airborne Lidar continue to improve, with scanners now able to emit more than a million pulses every second. Although it has never been easier to acquire high-quality laser data, storing and managing the huge volume of Lidar data collected can prove to be a challenge. Combined with associated metadata such as survey information, environmental conditions and flight lines, data management has now become a critical priority and focus. An initiative called the Lidar Management and Analytical Processing (LMAP) provides an automated workflow for uploading and storing Lidar and metadata into a Geographic Information System (GIS). Developed... (read more)
2019-02-19 09:37:01

Design to Deployment - ToughBoy Wave Buoy

When using sea-going equipment, the elements are invariably one of your greatest adversaries. Whether a researcher waiting for a weather window, or a technician maintaining a sensor platform, the waves and weather should never be underestimated as sensor equipment must endure these conditions. Wave buoys represent a considerable design challenge from multiple perspectives. Physical durability is clearly of fundamental importance, but that robustness must be extended into the functionality and performance of the wave buoy system. A wave buoy must also maintain operational independence over extended periods of time – measured not in weeks or months, but often years. The... (read more)
2019-02-12 09:01:57

Depth of Burial – Galloper Offshore Wind Farm

Galloper Offshore Wind Farm is a 353MW wind farm project located 30km off the coast of Suffolk, UK. It is now in full operation and each year will generate enough green electricity to power the equivalent of more than 380,000 British homes. The construction of the wind farm created almost 700 UK jobs and its operation has created around 90 direct and indirect long-term jobs in the local area. A 60-strong team will operate and maintain the wind farm day-to-day from a base under construction in Harwich International Port. There are 56 wind turbine generators (WTGs) located in water depths... (read more)
2019-02-11 10:51:47

Real-time Validation of CoVadem Derived Water Depths

By Using Locations with a Fixated Riverbed
CoVadem has created an up-to-date depth chart of inland waterways. The underlying data obtained came from vessels participating in the CoVadem initiative, each sharing their sensor data in the CoVadem cloud-based processing environment. To make sure the underlying data is both accurate and reliable, we need a method that automatically filters out erroneous measurements. This article presents a method in which measurements are compared in real-time at locations with a fixated riverbed (e.g. not eroding or aggrading over time). A growing fleet of roughly fifty vessels participating in the CoVadem initiative continuously measure, log and broadcast data from onboard sensors.... (read more)
2019-02-04 11:13:08

Choosing the Right Sonar Imaging System for Autonomous Underwater Vehicles

Multi Aperture Sonar - a Low-logistics Alternative to SAS
Underwater vehicle operators have to make a choice when deciding on a sonar imaging system to integrate on their systems. The decision could result in a trade-off, with a choice to be made between achieving high levels of range and resolution, and power and weight budgets. The decision made can impact the value of the subsea survey, classifying and mapping operations. But does it always have to be a trade-off?  What is a Multiple Aperture Sonar? In multi-aperture sonar (MAS), the dynamically focused multibeam input from 32 elements is used to extend the focus along the whole swath. Multiple apertures... (read more)
2019-01-29 08:25:14

Nigerian Navy Hydrographic Office Establishes New Bathymetric Capabilities with CARIS Software

The Nigerian Navy Hydrographic Office (NNHO) has selected Teledyne CARIS to provide solutions for both current and future national and international charting requirements. Equipped with CARIS Ping-to-Chart technology, the NNHO is establishing new capabilities for bathymetric analysis, and completion of hydrographic and other geospatial data. These tools will ensure an efficient workflow for the production of electronic charts and paper charts according to both the International Hydrographic Organization (IHO) and NNHO standards. The first part of the project was completed in late 2018, with delivery of the software and training at the NNHO office in Lagos. It will continue into... (read more)
2019-01-28 11:34:29

Using RAMMS to Acquire Integrated Land and Sea Data in the Caribbean

Fugro has completed a data acquisition campaign over the Turks and Caicos Islands, marking the first commercial success of its Rapid Airborne Multibeam Mapping System (RAMMS). Working under contract to the United Kingdom Hydrographic Office (UKHO), the company acquired more than 7,400 square kilometres of integrated, high-resolution bathymetric, topographic and image data. The resulting deliverables will support updated nautical charts and coastal zone management activities in the region. Launched in August 2018, RAMMS is a airborne bathymetric mapping system that uses multibeam laser technology to deliver industry-leading depth penetration and point densities. The compact sensor is deployed from a small aircraft... (read more)
2019-01-22 10:40:16

CGG Survey Supports Gabon’s 12th Offshore Licensing Round

Building on the success of its 25,000 km2 3D BroadSeis survey, which led to the recent Boudji-1 and Ivela-1 oil discoveries, CGG is extending its Gabon multi-client data footprint with a 9,800-km long-offset 2D seismic survey in an unexplored deepwater area of the South Basin. A subset of the data over the offered license blocks will be available in advance of Gabon’s 12th offshore licensing round planned for June 2019. The new 2D data will help define the full extent of existing and new plays in the region. It will also aid in understanding the thickness variations in the sediment... (read more)
2019-01-22 10:51:04

The Study of Mapping the Seafloor

What is the Difference Between a Bathymetry Chart and a Hydrographic Chart?
This article will immerse you into the deep water of Bathymetry. It explains in detail what a bathymetry map is, what it shows, what methods we use to collect the bathymetry data and last but not least, how to create a good quality bathymetry map. It will also cover the difference between a bathymetry chart and a hydrographic chart and the techniques our ancestors used in the past to collect and record depths. What is Bathymetry? Bathymetry is the study of mapping the seafloor. Bathymetric maps represent the ocean (sea) depth as a function of geographical coordinates, just as topographic maps... (read more)
2019-01-15 08:58:54
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