3D Web-Mapping

Integrating Marine Data into NASA World Wind
While Google Earth is the best known 3D web-mapping viewer currently in the public domain, there are alternative virtual globe viewers available. In particular, this article focuses on the NASA World Wind viewer, using OGC data-dissemination standards and multi-beam sonar data from the Irish National Seabed Survey to illustrate its potential. The creation of a range of innovative GIS tools and systems is enabling the harmonisation and electronic sharing of geospatial data and services across distributed networks. 3D web mapping viewers, such as NASA World Wind, are perhaps some of the most visible of these products. OGC Standards Such developments... (read more)
2008-01-01 01:00:00

3D Web-Mapping

Integrating Marine Data into NASA World Wind
While Google Earth is the best known 3D web-mapping viewer currently in the public domain, there are alternative virtual globe viewers available. In particular, this article focuses on the NASA World Wind viewer, using OGC data-dissemination standards and multi-beam sonar data from the Irish National Seabed Survey to illustrate its potential. The creation of a range of innovative GIS tools and systems is enabling the harmonisation and electronic sharing of geospatial data and services across distributed networks. 3D web mapping viewers, such as NASA World Wind, are perhaps some of the most visible of these products. OGC Standards Such developments... (read more)
2008-01-01 01:00:00

Coastal Mapping Project Completed

Fugro, USA, has completed data acquisition and processing of the entire United States West Coast under a contract with the U.S. Army Corps of Engineers (USACE) in support of the National Coastal Mapping Program. The company's efforts earned Fugro the USACE 'LCDR Peter Johnson Best Practices Award' at the recent Joint Airborne Technical Center of Expertise (JALBTCX) Annual Airborne Coastal Mapping and Charting Workshop. This major, multi-year effort covered a 1,500m-wide ribbon, extending 500m inshore to 1,000m offshore, along the coastlines of California, Oregon and Washington. Over three survey seasons, approximately 2,000km of coastline were surveyed.  This marks the first... (read more)
2012-07-31 04:13:26

Habitat Mapping - Increasing Importance

Two decades ago as CO of a survey ship, I interpreted the SSS-registrations (still on wet paper) twice. Once was for nautical charting purposes and the second, in my own time, was simply to ‘get the most from data collected at high costs’ (my hobbyhorse) when I made a bottom texture chart for those institutions interested. Since then, for various reasons e.g. a growing concern about the environment, more and more habitat studies are now conducted, ranging from baseline surveys to full-blown scientific studies. The multidisciplinary studies are mostly based on hydrographic charting specifications and data quality methods (which I... (read more)
2008-08-27 12:00:00

3D Web-mapping

Integrating Marine Data into Google Earth
Google Earth has become a popular 3D web-mapping viewer, mainly due to the richness of satellite imagery in its primary database. However, the database contains very limited marine data. While the addition of marine data would be welcome, this article explores the use of Web Map Service (WMS) and Keyhole Markup Language (KML) to overlay large-scale multi-beam imagery datasets from the Irish National Seabed Survey into the Google Earth viewer. Over the last seven years the Irish National Seabed Survey (INSS) has returned many terabytes of multi-beam sonar and ancillary data, providing detailed bathymetry data and knowledge of seabed characteristics.... (read more)
2008-01-01 01:00:00

Mapping Diamondiferous Gravel

Using the Aquares Resistivity System on a Fluvial Diamond Concession
An Aquares resistivity survey was carried out in a river in sub-Saharan Africa to map the sub-bottom features of a diamond concession. Diamondiferous gravels were distinguished remotely from bedrock and other soft sediments by the Aquares Resistivity System (ARS), a sub-bottom acquisition and profiling tool. It was selected due to its cost-effective operation and ability to provide qualitative and quantitative results. The ARS utilises recently developed processing innovations, which enable data to be presented in vertical sections and horizontal slices. This facilitates accurate volume calculations and the development of isopach maps for distinguishable types of bedrock and sediments. Acoustic sub-bottomprofiling... (read more)
2009-06-04 12:00:00

Multi-sensor Coastal Mapping

Integrating Active and Passive Sensors Provides Major Gains
Fugro has tested a multi-sensor approach to balance growing data needs with limited agency budgets. Coastal mapping programmes are quickly becoming a priority for government agencies across the globe. The desire to better define and understand the land/sea interface is based on several interrelated factors, including sea-level rise and its impacts on coastal populations, the growth of and reliance on a blue economy, and the need to maintain critical nearshore habitats in the midst of a changing landscape.  (By José Martínez Díaz and Don Ventura, Fugro USA) In support of its hydrographic charting programme, the US National Oceanic and Atmospheric Agency... (read more)
2016-12-13 09:47:02

Expanding Marine Mapping Programme

Following an agreement with the Norwegian Hydrographic Service, SeaZone is rolling out the next stage of its global marine mapping programme. The contract, signed at the 4th Extraordinary International Hydrographic Conference in Monaco, provides SeaZone access to base data for the whole of the North Sea, which will be used to improve the coverage of SeaZone HydroSpatial, and other geographic information products.   SeaZone HydroSpatial is the first "off the shelf" authoritative digital marine mapping, engineered and maintained from raw material from hydrographic offices and other data agencies. HydroSpatial provides reference information comparable with land mapping and is designed for... (read more)
2009-08-18 03:02:31

SHADOWS Mapping Sonar

The delivery of high quality, repeatable data is of paramount importance for the successful collation of any large dataset, particularly when the data is acquired in a number of successive campaigns (as with EEZ mapping, route surveys, debris surveys, pre-seismic surveys, environmental characterization surveys, etc). IXSEAs SHADOWS Mapping Sonar is an innovation in seafloor mapping, that may give the answer.   Aside a Synthetic Aperture Sonar (SAS technology), SHADOWS combines automatic generation in real-time of high-resolution mosaic in GeoTiff format; high-accuracy positioning (the mosaic is generated from the fish position); 600 m true swath (no blind zone at nadir); coverage... (read more)
2008-05-26 12:00:00

Mapping Underwater Habitat

Biosonics’ Visual Habitat DT-X is a software product for the rapid assessment and mapping of aquatic habitat features. With Visual Habitat software, users can present information in a clear and visually captivating display. DT4 data files can be processed to generate full colour maps displaying transects as data layers highlighting bathymetry, plant coverage, plant canopy height and substrate type. When viewing each file echogram, simultaneously the synchronised transect map view can be monitored. This dual-viewing mode of Visual Habitat DT-X allows for visual ground truthing of a plan (map) view with a cross-section (echogram) view. An integrated utility automatically provides... (read more)
2013-08-01 08:36:44
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