Satellite-based Bathymetric Mapping in Ireland

UK-based Proteus has been awarded a major contract by the Geological Survey of Ireland (GSI) to deliver complete bathymetric surveys of five Irish bays. In addition to operational mapping, Proteus will use satellite data to create a seabed classification map and perform water quality monitoring on one of the bays for proof-of-concept purposes. GSI issued a competitive request for proposals following a successful 2012 pilot in which Proteus demonstrated the effectiveness of a commercial satellite-based bathymetry process in Ireland’s Wexford Harbour. Developed by EOMAP GmbH and commercialised by Proteus, the technique extracted seafloor elevation measurements to depths in excess of... (read more)
2013-05-01 09:14:41

Land and Sea Shallow-water Mapping

Optech, Canada, is releasing a compact shallow-water mapping solution for its line of ALTM Airborne Laser Terrain Mappers. The new ALTM Aquarius provides simultaneous terrestrial and water-depth measurement capability, enabling the collection of datasets that span the entire land-water interface to depths in excess of 10 metres. Available as a simple sensor head addition to the ALTM Gemini product line, or as a complete survey solution on its own, Aquarius offers a new capability to traditional airborne surveyors looking to add further value to their map product deliverables while maintaining their existing ALTM planning and processing workflows. According to Michael... (read more)
2011-06-01 09:20:04

New Seamount Discovered During ECS Mapping

A discovery has come out of the U.S. Extended Continental Shelf (ECS) Task Force mapping efforts in an area of the Pacific Ocean that is one of the least explored of the Earth's oceans. On 13 August 2014, University of New Hampshire (UNH) Joint Hydrographic Centre (JHC) scientists aboard the R/V Kilo Moana, discovered a new seamount in the Pacific Ocean using a 12kHz multibeam echosounder. The seamount, estimated to be more than 1,100 metres high, was discovered in the midst of a feature-rich stretch of seafloor approximately 5,100 metres deep. The scientists, led by Dr. James Gardner, have been... (read more)
2014-08-25 12:27:35

Challenges of Mapping Small Hydroelectric Dams

By the end of 2008 ‘small-hydro' dams were generating over 85 gigawatts of power from installations with capacities of a few hundred kW up to a few tens of MW (compared to the Hoover dam at over 2000MW). These installations often use existing dams or are developed alongside new dams whose primary purpose is river water-level control or irrigation. There are many thousands of these small dams worldwide (over 95,000 in the USA alone) and maintaining this infrastructure requires accurate mapping and monitoring. This presents some challenges to the hydrographic surveyor. Here, the experiences of one company providing hydrographic surveys... (read more)
2010-02-03 03:28:20

Programme European Lidar Mapping Forum Launched

The newly-launched European Lidar Mapping Forum is to present over 40 technical papers focused on airborne Lidar, mobile mapping, bathymetric and coastal Lidar. The first European Lidar Mapping Forum will be held in the Netherlands on 30th November and 1st December 2010. During the two days, more than 40 technical papers are to be presented. With the input of an internationally experienced and industry-led technical committee, a varied and informative conference programme has been compiled. The airborne Lidar session promises an unparalleled selection of specialist briefings on the latest technologies and trends, supported by real-world project experiences. Three sessions have... (read more)
2010-09-10 09:49:43

Marine Mapping Agreement for Northern Ireland

OceanWise has been awarded a contract to provide the Government of Northern Ireland with marine mapping. The agreement includes Marine Themes, Marine Themes DEM and Raster Charts XL (eXcluding Land) provided in the form of datasets and as OGC compliant web services. The data will be used to support desktop GIS and as input to web-based applications. Aoibheann Rooney, from the Department of Agriculture, Environment and Rural Affairs (DAERA) in Northern Ireland, explains OceanWise is able to provide nautical charts with the land area removed, so DAERA is able to offer their products in combination with more appropriate mapping from... (read more)
2017-07-07 10:21:22

Coastal Mapping Around Shore Parallel Breakwaters

Using a Standard Marine X-band Radar
Surveying very shallow coastal areas can be a logistically difficult and time-consuming process. Mapping the embayments around a series of shore parallel breakwaters at Sea Palling on the south-east coast of England has proven an interesting challenge for a new radar-based remote mapping technique. This technique uses the wave behaviour visible as sea clutter on a marine radar to infer the underlying water depth that caused the observed wave behaviour, allowing large areas of the seabed to be mapped without having to deploy boats or people. View Larger Map   When new breakwaters at Sea Palling proved more effective than... (read more)
2009-02-12 04:08:28

Analysis of CZMIL and Coastal Mapping Technology

A current user of the Teledyne Optech CZMIL Coastal Zone Mapping and Imaging Lidar will make a presentation , comparing various Lidar bathymeters during Shallow Survey 2015, to be held at Plymouth University, UK, from 14-18 September. The presentation ‘A look into the performance of bathymetric Lidar systems’ given by Chris Macon of the Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) is scheduled at 10:15 on Wednesday, 16 September. JALBTCX spent the summer testing several types of bathymetric Lidar sensors and Mr. Macon will discuss their results. Depth up to 65m The Teledyne Optech booth M14 will have... (read more)
2015-09-10 08:25:59

2D/3D Web-mapping

Web Visualisation Coastal Orthophotos
This paper describes the development of a web spatial image server used for sharing huge sets of georeferenced coastal orthophotos on the web via an easy visualisation interface. Traditional cartography was considered a highly sophisticated methodology for the production of high-quality maps, using the sales-business model of the non-internet economy and dedicated to specialists. The recent arrival on the scene of three internet leaders whose general mission is to map everything, and the release of their popular online earth browsers has had a huge impact in the geomatics arena. All are by now familiar with the success enjoyed by Google... (read more)
2007-03-02 12:00:00

Unmanned Mapping of Ultra-shallow Waters

Tarragona Survey of the Riu Francoli Using an USV
Hydrographic surveying in ultra-shallow, inland and enclosed waters can prove extremely challenging and often presents increased risks and obstacles to both personnel and equipment. These considerations include health and safety issues, potential damage to equipment, lack of suitable launch sites and regions where submerged debris and physical seabed characteristics can make an area particularly hazardous to survey. In these locations, traditional manned survey vessels are often unsuitable, inefficient or incapable of completing a successful survey. In November 2016, Unmanned Survey Solutions, with support from Swathe Services, was tasked with completing a hydrographic survey of such an area.  Survey Layout Located... (read more)
2017-07-11 01:22:08
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