Subsea SE Alaska: Seismic Sensors Deployed

Press Release
Thursday, May 02, 2013
Preparation of Ocean-bottom Seismometer: Photo credit USCG

The US Coast Guard Cutter 'Maple' helps the U.S. Geological Survey to deploy 12 seismic sensors along the Queen Charlotte-Fairweather Fault, northwest of Craig, Alaska.

The team placed the ocean-bottom seismometers along a 28-mile section of the Queen Charlotte-Fairweather Fault to improve understanding of recent earthquake activity and associated seismic and tsunami hazards in Southeast Alaska coastal communities.

“The Queen Charlotte-Fairweather fault is similar to the northern San Andreas fault, with the same earthquake potential,” said Dr. Peter Haeussler, a research geologist with the USGS. “A problem is that it is located entirely offshore, so it is much harder to study.”

The Maple, a 225-foot buoy tender homeported in Sitka, has all the necessary equipment on board to handle hefty equipment like the OBS.
“Our crew uses the buoy deck and crane to routinely service aids to navigation of all shapes and sizes,” said Lt. Cmdr. Fred Seaton, commanding officer of the Maple. “We were more than happy to assist the USGS in deploying equipment that will raise earthquake and tsunami awareness in Southeast Alaska.”

The crew deployed the 12 seismometers over two days before returning to Sitka. These instruments, and the data they record, are due to be recovered in early June.

“The Coast Guard’s willingness to provide a ship for the deployment allowed us to take advantage of a unique opportunity to observe aftershock activity and learn more about fault structure and expected long-term seismic behavior in the region,” Haeussler said.
 


Technology

NASA May Send Submarine to Titan

NASA has unveiled plans to send a submarine into the depths of the largest ocean of Saturn's biggest moon, Titan in a bid to explore the depths of its largest ocean.

Scorpene Submarine Data Leak: Setback to Indian Navy

India has began multiple investigations to determine the extent of damage caused by the reported massive leak of secret data detailing the combat and stealth capabilities

NOAA Engineers a Better Current Sensor for Mariners

Navigating into seaports is now safer and more efficient for mariners thanks to improved NOAA technology that ships rely on to give them information about currents.

Ocean Observation

South Asia Meet on Oil, Chemical Spill Contingency Plan

A meeting to update South Asia’s regional plan for oil and chemical pollution preparedness and response is underway in Male, Maldives (22-25 August), informs  International

Global Climate Change Threatens Papahānaumokuākea Marine

Despite its remote location in the Northwestern Hawaiian Islands, Papahānaumokuākea Marine National Monument faces a looming threat of global climate change that

Indonesia to Change Name of South China Sea to Natuna Sea

President of Indonesia Joko Widodo, commonly known as Jokowi,  has vowed to transform Indonesia, which includes 17,000 islands into a ‘maritime power’, and also

 
 
Maritime Security Maritime Standards Naval Architecture Navigation Offshore Oil Pipelines Pod Propulsion Ship Electronics Ship Simulators Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0800 sec (12 req/sec)