The long-term goal is to build and deploy a highly sensitive, in situ AUV-mounted instrument designed to locate and identify plastic and rubber-coated objects, such as mines, in the water column and buried within the seafloor. It is anticipated that a compact, single laser LIF system with optical filtered PMT detectors will provide real time detection of plastic and carbon compounds. Projected ...

The Subsurface Autonomous Mapping System (SAMS) is a full-ocean-depth (6000-meter) autonomous vehicle with integrated physical oceanography and bottommapping sensors. Developed for the Naval Oceanographic Office (NAVOCEANO) by the Woods Hole Oceanographic Institution Ocean Systems Laboratory, SAMS is a new NAVOCEANO capability for deep-sea oceanographic data collection. SAMS is equipped with a ...

Sensor engineering is continuously evolving as devices become cheaper, smaller, more intelligent, and more efficient. Today, oceanographic sensors aim at monitoring marine processes by means of physical, chemical, and biological variables, and use different data formats, units, parameters, resolutions, data quality standards, and protocols. Therefore, integration and interoperability at Europea...

Since the industrial revolution, anthropogenic CO₂ emissions have caused ocean acidification, which particularly affects calcified organisms. Given the fan-like calcified fronds of the brown alga Padina pavonica, we evaluated the acute (short-term) effects of a sudden pH drop due to a submarine volcanic eruption (October 2011-early March 2012) affecting offshore waters around El Hierro Island (...

A chlorophyll sensor has been designed for remote applications in underwater-towed bodies and moored or buoyed sensor systems for measurement periods up to 60 d. The sensor has alternative ranges of 0 to 100 mg m-3 or 0 to 1000 mg m-3 chlorophyll a, with a resolution of 0.1 mg m-3, and excellent long-term stability of calibration. Some results obtained with the sensor in the Undulating Oceanogr...