Category Archives: Hydro/Marine

The adventures of Jacques Cousteau, his research vessel the Calypso, and his soucoupe plongeante (diving saucer, aka “Denise”) that he co-designed in 1959 captured the imaginations of generations.

Hydro Insights, Part 2

Reviving Interest in the Seas Pictured: The adventures of Jacques Cousteau, his research vessel the Calypso, and his soucoupe plongeante (diving saucer, aka “Denise”) that he co-designed in 1959 captured the imaginations of generations. Editor’s Note: xyHt is honored to feature insights from these two distinguished scientists in the fields of hydrography, marine surveying, and...

This combined lidar data set of the southern island includes sidescan sonar, shoreline lidar, and terrestrial static lidar.

A Shore Thing

Integrity monitoring the islands of the Hampton Roads Bridge Tunnel involves combining hydrographic survey, lidar, shoreline survey, and terrestrial lidar survey. Rigorous structural integrity monitoring to extend the lifespan of critical infrastructure is an economic necessity. Remote sensing and integrated remote sensing provide new ways to monitor all elements of a structure in fine detail....

This visualization is of the high volume of commercial shipping activity into and out of ports rimming the Pacific Ocean. The data were analyzed using Esri’s new GIS Tools for Hadoop toolkit. Visualization by Mansour Raad, Esri. Available online at coolmaps.esri.com/BigData/ShippingGlobe with any browser running WebGL.

Hydro Insights

This visualization is of the high volume of commercial shipping activity into and out of ports rimming the Pacific Ocean. The data were analyzed using Esri’s new GIS Tools for Hadoop toolkit. Visualization by Mansour Raad, Esri. Available online at coolmaps.esri.com/BigData/ShippingGlobe with any browser running WebGL. Part 1: Uncharted Depths Editor’s Note: xyHt is honored to...

The Royal Navy submarine HMS Astute. Credit: LA(Phot) Paul Halliwell/MOD.

Quantum Navigation

Above: The Royal Navy submarine HMS Astute. Credit: LA(Phot) Paul Halliwell/MOD. Will freezing sub-atomic particles one day supplant GPS as the primary navigation technology? Many of the most accurate measurement devices, including atomic clocks, work by observing how atoms transfer between individual quantum states. The longer the atomic transition can be observed, the more precisely it...

Shannon Hoy on the bow of the RVIB Nathaniel B. Palmer as she crossed through the Bransfield Strait in 2011. Photo by A. Margolin.

Epiphany on the Bow

Above: Shannon Hoy on the bow of the RVIB Nathaniel B. Palmer as she crossed through the Bransfield Strait in 2011.  Photo by A. Margolin.  A student’s journey from marine biologist to ocean mapper. Ever since I can remember I’ve wanted to work in ocean sciences. From when I was a child splashing in the tidal...

This data was gathered in shallow water in and around Bristol docks, UK and processed with GeoSwath, an echosounder by Kongsberg Maritime.

Capturing More with Shallow-water Multibeam

Interferometric sonars are providing a new tool for the hydrographic surveyor in shallow to medium-depth water applications. As we begin to return to normalcy after the deepest recession of most of our lifetimes, many ports, coastal authorities, and inland waterways are starting to look at infrastructure projects that have been kept on hold, and they...