USGS Selects Woolpert for Topographic Lidar Task Order in Hawaii

The U.S. Geological Survey has awarded Woolpert a task order under its Geospatial Product and Service Contract 3 to acquire Quality Level 1 topographic Lidar data in Hawaii. The task order applies to Oahu, the four islands in Maui County and portions of the Big Island of Hawaii. It is funded by the USGS, with interagency cooperation from the National Oceanic and Atmospheric Administration’s Office for Coastal Management. The Natural Resources Conservation Service, the Federal Emergency Management Agency and the State of Hawaii, Office of Planning, also contributed to the task order and will be end users of the data.... (read more)
2021-01-21 02:55:33

Sharing Experiences, Tools and Advances in Mapping Shallow Water Topography from Space

It is now possible to map shallow water topography, globally, from the comfort of your desk. Satellite-Derived Bathymetry (SDB), which uses remote sensors on space-borne platforms to generate dense bathymetric grids, has in recent years become an established survey technology. This technology has seen uptake in many applications, including charting, coastal engineering, environmental management and hydrodynamic modelling. However, best practices on the methods and how to handle uncertainties have not yet been established as common knowledge. The speed of the continuous technological development and the different methods and approaches to market underline an increasingly important need for guidance on using and... (read more)
2020-12-08 08:22:22

Open Source Software and Hydrographic Survey Data

3D Point Cloud Editing for Quick Seafloor Extraction Analysis and Visualizations
Hydrographers and data processors are expected to produce high-quality deliverables with a swift turnaround in this present age of data collection and technological refinement. However, the cost of proprietary commercial software processing programmes has excluded many in the past. Such programmes incorporate finely-tuned tools suites and nested algorithms that have been polished and distilled over the years. However, the financial hurdles are not as high as the passion and love that these individuals carry for this explorative industry and, thankfully, open source resources and collective intelligence are changing the game. Processors are often given large datasets with requests for end product... (read more)
2020-12-01 09:08:59

High-resolution Survey on Versatile USV

Skansen is a historic area in the city of Trondheim in central Norway and home to the Skansen Bridge, a 52m span bascule railway bridge that opens for marine traffic to access the Trondheim Fjord. The Skansen Bridge was built in 1918 and designed by structural engineer Joseph Strauss, who also designed the Golden Gate Bridge in San Francisco. The displacement of rocks and other objects in shallow waters over time can result in structural integrity issues for bridge piers such as the Skansen Bridge and hazards for vessel traffic, so that regular inspection of the structural integrity is required... (read more)
2020-11-23 04:09:52

Fugro Wraps up Offshore Field Programme for Mayflower Wind in US

Fugro has successfully completed a large site characterization field programme off the coast of Massachusetts for Mayflower Wind, a joint venture between Shell New Energies and Ocean Winds (the global offshore wind collaboration of Engie and EDP Renewables). The six‑month programme involved comprehensive, high‑resolution geodata acquisition within the project’s 520km2 lease area and along the export cable routes. This data will support permitting, design and installation of the proposed wind farm, which could generate up to 800MW of renewable energy for over half a million homes. Fugro’s work on the project began in April and comprised four vessels and one aircraft... (read more)
2020-11-23 11:56:12

M&E Deploys Autonomous Survey Vessel on Florida Reef Survey

Morgan & Eklund (M&E) recently announced the successful completion of a multibeam and side-scan sonar survey to map and monitor an artificial reef offshore Fort Pierce along the Treasure Coast of eastern Florida. A post-construction survey was completed entirely using a SeaRobotics (SR) 'Surveyor Class' autonomous surface vessel (ASV). The objective of the survey was to verify seafloor conditions and accurate placement of artificial reefs. With its catamaran hull design, the SR-Surveyor M1.8 is an autonomous platform equipped with a multi-sensor package, that includes an EdgeTech 2205 multibeam echosounder, a 1,600kHz and 540kHz dual-beam side-scan sonar, an AML Oceanographic SV... (read more)
2020-11-17 09:07:26

Fugro Deploys Latest RAMMS Technology to Map Lake Huron

Fugro is mobilizing its Rapid Airborne Multibeam Mapping System (RAMMS) to Ontario, Canada, to acquire 3,147km2 of high-resolution bathymetry data over Lake Huron for the Canadian Hydrographic Service (CHS). The survey is expected to last six months from data collection to data delivery and will support the agency’s ongoing nautical charting updates in the country’s Great Lakes region. Fugro has used RAMMS throughout North America, the Caribbean and Europe since launching the next-generation airborne Lidar system in 2018. In addition to nautical charting, RAMMS has supported offshore wind, coastal management and sea-level rise projects, in line with Fugro’s strategy of expanding... (read more)
2020-10-27 10:25:47

Bathymetry from UAV Imagery and Machine Learning

Improving Results with Refraction Corrections
Accurate bathymetric mapping of shallow areas is essential for a plethora of offshore activities. Through Structure from Motion (SfM) and Multiview Stereo (MVS) techniques, images can provide a low-cost alternative compared to Lidar and sonar systems while also offering important visual information. This article presents a new framework for mapping the seabed in clear and calm shallow waters for small- and large-scale surveys using aerial imagery and machine learning to correct the geometric effects of refraction on the 3D point clouds and the imagery. SfM is a photogrammetric technique for estimating 3D structures from 2D image sequences. It involves acquiring... (read more)
2020-10-13 10:42:39

Extraterrestrial Hydrography

While there is still lots of ocean mapping work to do on Earth, oceans situated elsewhere in our solar system hold plenty of mysteries too, writes Wim van Wegen in this column. The oceans on our planet remain largely an unexplored world, far from divulging many of their secrets. Seabed 2030, which is a joint project between the Nippon Foundation of Japan and the General Bathymetric Chart of the Oceans (GEBCO), aims to collect all available bathymetric data in order to produce the definitive map of the world’s ocean floor by 2030. As of today (and despite many years of... (read more)
2020-10-08 08:47:41

Fugro’s Bathymetric Lidar Improves Hydrographic Data Collection in Australia and Pacific Region

Fugro has successfully trialled a major upgrade to its Fugro LADS airborne lidar bathymetry (ALB) system. The enhanced LADS HD+ technology was developed in Fugro’s laser laboratory in Adelaide, Australia, and is a sophisticated hydrographic mapping system that accurately measures water depth in both the marine and coastal zone environments. The new advances to the system have doubled the laser speed and the swath width and improved the object detection of the system, greatly increasing data collection efficiency for nautical charting. The system builds on the proven Australian-developed LADS technology and has been designed for safe, high-speed and cost-effective surveys... (read more)
2020-09-10 02:51:26
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