First Real-time Seafloor Earthquake Observatory

An interdisciplinary project led by Woods Hole Oceanographic Institution (WHOI) geologist Jeff McGuire, an expert in global earthquake seismology and geodesy, and John Collins, director of WHOI's Ocean Bottom Seismometer Lab, is to build and install the first seafloor geodesy observatory above the expected rupture zone of the next great Cascadia earthquake. The project is being facilitated by a grant of USD1 million from the W. M. Keck Foundation.     One of the most dangerous faults in North America is the Pacific Northwest's Cascadia fault, an offshore, subduction zone fault capable of producing a magnitude 9 earthquake that would... (read more)
2012-02-06 01:49:07

Seafloor Systems Expands Sales Support Services in Latin America

Seafloor Systems has announced the appointment of Mauro Romani as sales support engineer for the Latin American market. Mr Romani, who previously served as a geotechnical equipment specialist for Golder Associates based in Lima, Peru, brings his customer service, sales engineering and technical support experience into this new position, reporting to Josh Grava, vice president of sales. He will directly support dealers and customers in Latin America with sales and training as well as product demonstrations for the Seafloor Systems range of echosounders and remote and autonomous survey vehicles. Mr Romani will be based in Lima and can be contacted via telephone (+51... (read more)
2016-09-15 01:19:37

Satellite-derived Land/Seafloor Surface Models for Caribbean Disaster Recovery

TCarta, a global provider of marine geospatial products, has delivered pre- and post-disaster surface models for the Caribbean islands of Antigua and Barbuda for use in Hurricane Irma recovery efforts. The satellite-derived surface models contain seamless datasets of onshore elevation and offshore water-depth measurements for each island. The UK government commissioned the Hurricane Irma disaster mapping for Antigua and Barbuda as part of the Commonwealth Marine Economies Programme. TCarta won a competitive tender, which specifically requested end products derived from satellite imagery. By specifying satellite-derived data as the deliverable in its tender, the UK government acknowledged the speed and cost... (read more)
2018-04-19 10:51:10

Mapping the Seafloor with Remote Sensing and Satellite Imagery

An Analysis of the Techniques and Benefits of These Methods
70% of the Earth is covered by water, but so far just 7% of it has been surveyed (Mars, Venus and the Moon are better surveyed). Hydrography as a science has changed dramatically since the first measurements were made by Alexander Dalrymple and James Cook with lead lines and sextants. Singlebeam echosounders were invented in the 1920s – a technology still used today for mapping the seafloor. This method of using echosounders can produce very high-resolution bathymetric data but the high operational costs and the slow working process make it economically unsuitable for covering large areas. However, with the ongoing expenses of... (read more)
2018-06-19 09:23:54

Map of Undersea Mountains Created by Satellite

European Space Agency (ESA)’s ice mission has been used to create a new gravity map, exposing thousands of previously unchartered ‘seamounts’, ridges and deep ocean structures. This new picture of the least-explored part of the ocean offers fresh clues about how continents form and breakup. Scientists from Scripps Institute of Oceanography at University California San Diego in the US and colleagues tapped into two new streams of satellite data to create a new gravity map mirroring features of the ocean floor – twice as accurate as the previous version produced nearly 20 years ago. Carrying a radar altimeter, CryoSat’s main... (read more)
2014-10-03 04:36:10

Optech at ILMF 2014

Optech, Canada, is attending the International LiDAR Mapping Forum 2014 as both a presenter and on the trade showfloor. Held from 17 to 19 February 2014 in Denver, CO, the forum examines the use of Lidar in applications such as transportation, urban modelling, coastal zone mapping, utility asset management, 3D visualisation and GIS. Optech will be showcasing the Lynx Mobile Mapper as a fast and extremely safe way to collect 3D detail of corridors such as roads, distribution lines, railways and waterways. The vehicle-mounted lidar and integrated 360° camera systems leverage the high productivity Optech LMS workflows to efficiently deliver... (read more)
2014-02-13 09:12:26

CryoSat Detects Antarctic Underwater Ice Loss

ESA’s CryoSat mission has revealed that, over the last seven years, Antarctica has lost an area of underwater ice the size of Greater London. This is because warm ocean water beneath the continent’s floating margins is eating away at the ice attached to the seabed. Most Antarctic glaciers flow straight into the ocean in deep submarine troughs. The place where their base leaves the seabed and begins to float is known as the 'grounding line'. These grounding lines typically lie a kilometre or more below sea level and are inaccessible even to submersibles, so remote methods for detecting them are... (read more)
2018-04-05 10:26:45

Over 60 World-leading Experts to Present at ILMF

The 16th edition of the International Lidar Mapping Forum (ILMF), taking place from 22-24 February 2016 in Denver, Colorado, USA, will focus on the latest aerial, terrestrial and underwater Lidar as well as emerging remote-sensing and data collection tools and technology. Applications include: asset management; civil infrastructure; coastal zone mapping; emergency services & disaster response; land and natural resource management; and urban modelling. The ILMF 2016 programme is comprised of more than 60 presentations, with world-leading experts discussing latest linear Lidar advances and applications, as well as new and complementary technologies, including Single Photon Counting, FLASH, and Geiger-Mode. The programme also... (read more)
2016-01-13 04:44:59

Technology in Focus: Bathymetric Lidar

With sea level rise and increases in the severity of extreme natural events, there has been a renewed push to further our understanding of the coastal zone. Fundamental to understanding risk in areas of high vulnerability is capturing the near-shore land and sea surface. Bathymetric Lidar is the most effective and cost-efficient technology to capture both the land and seafloor simultaneously to provide a continuous, detailed 3D elevation model along the coastline. Its ability to successfully capture elevation on both sides of the coastline, over areas stretching more than 100km along the coast, has made it the ‘gold standard’ for... (read more)
2016-11-22 10:26:19

First High-resolution Map of the Great Barrier Reef Released

One and a half million square kilometres of bathymetric seafloor data have been released to the public by Geoscience Australia under partnership with James Cook University and the Australian Hydrographic Service of the Great Barrier Reef. The project carried out high-resolution bathymetric scans, which were combined with existing datasets held by the government to create the most comprehensive, detailed models produced to date. The release comes as the federal government announced an AU$60 million investment in protective measures for the Great Barrier Reef, which include measures to shield the Reef from polluted water, and investment in Australian Institute of Marine... (read more)
2018-02-06 11:22:34
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