Category Archives: Hydro/Marine

Mapping the Pennsylvania Lake Erie Watershed

Imagery was collected along 77 miles of shoreline to provide a better understanding of Pennsylvania’s natural resources. By Brian Stevens  The Pennsylvania Lake Erie Watershed is a substantial part of the world’s largest surface freshwater system, the North American Great Lakes. The watershed is 512 square miles, consisting of 15 major sub-watersheds. It’s estimated that...

xyHt Heights supplement cover April 2017

Remote Sensing in Yellowstone Park

A consortium demonstrates the value of integrated remote-sensing technologies for studying and monitoring the impacts of climate change using the northern range of Yellowstone National Park as a testing area. By Dr. Olaf Niemann,  Dr. Robert Crabtree,  and David Brown   In 2014, a consortium between environmental scientists and an airborne remote-sensing company was awarded funding...

Canadian Hydrographer Certification Scheme

Submitted by Bruce Calderbank, FRICS, CLS, P. Eng. The Association of Canada Lands Surveyors (ACLS) has developed a certification model for hydrographers and offshore surveyors that has been officially recognized by the IHO/FIG/ICA International Board of Standards and Competence for Hydrographic Surveyors and Nautical Cartographers (IBSC) in April 2016 and is now ready to receive applications....

Monohansett

Deep-sea Mobile Mapping

We’re all familiar with lidar-based mobile mapping from ground vehicles, and most of us are aware that aerial lidar is being used effectively to do shallow-water mapping along coastal and riverine projects. Deep-water lidar mobile mapping from an ROV? Well it’s a first for me. Most all of the subsurface surveys I’ve read about were...

Disparate Data for Marine Life

Remote sensing data helps to inform ocean planning for energy development around the main Hawaiian islands. Using remotely sensed imagery to map physical and biological patterns in the marine environment enhances our ability to understand how environmental conditions change over broad spatial scales (10s to 100s of kilometers) and temporal scales (years to decades). These...

Hydro Insights Part 3

A Case for Big Blue Data Note: xyHt is honored to host insights from Dr. Dawn Wright and Captain (ret.) Rafael Ponce, two distinguished scientists in the fields of hydrography, marine surveying, and oceanography. Parts one and two of our interview appeared in the September and November 2015 print issues of xyHt. xyHt: Terrestrially, a boom is...