A Marine Educator At Sea

Sea Grant's Bill Hanshumaker chronicles ocean research missions

A Marine Educator At Sea

Entries Tagged as 'deployment'

A Day in Transit

October 20th, 2011 · No Comments · 2011 - R/V Wecoma, 2011 Crew, Deployment, Seismometers

Following the continental margin, the Wecoma cruised south at about 10 knots for most of the day. The seas picked up slightly, and there were light scattered showers. We deployed another Abalone seismometer at 4:30, and it was on the bottom by 5:30. We will be deploying the last Cascadia seismometer at 1: am.

[Read more →]

Tags:·

Thursday Morning

October 20th, 2011 · No Comments · 2011 - R/V Wecoma, Deployment, Seismometers

The seas are very calm this morning, making for an easy deployment of the Abalone seismometer. We are directly offshore from the mouth of the Columbia River, in a depth of 2678 meters.

[Read more →]

Tags:·

Off the coast of Washington

October 19th, 2011 · No Comments · 2011 - R/V Wecoma, Deployment, Missions, Seismometers

Wednesday afternoon, October 19th – Off the coast of Washington at the edge of the continental margin We just deployed another Cascadia seismometer. It will take 65 minutes to reach the ocean floor, 2630 meters below. It will take another hour to conduct the acoustic survey, as the Wecoma cruises in a kilometer and ½ […]

[Read more →]

Tags:·

Wednesday’s Sunrise

October 19th, 2011 · No Comments · 2011 - R/V Wecoma, Deployment, Seismometers

The weather has deteriorated somewhat, but is still serviceable.  We deployed two seismometer last night and another one this morning. Since we are in deeper water, it takes longer for the seismometer to reach the bottom.  A acoustic survey is immediately conducted to determine its exact location in three dimensions; latitude, longitude and depth. The […]

[Read more →]

Tags:·

A Beautiful Monday at Sea

October 18th, 2011 · No Comments · 2011 - R/V Wecoma, Deployment, LDEO, Seismometers, SIO

We have traveled north to test two Cascadia seismometers that were deployed earlier during the first leg during July. A specific frequency of sound (between 9 and 13 kilohertz) is sent down to check if the instrument package is working. Sometimes a fishing trawl can flip over the seismometer, rending it useless. If the instrument […]

[Read more →]

Tags:····

Heading South

October 18th, 2011 · No Comments · 2011 - R/V Wecoma, Deployment

We’ll be in transit south for the next 8 hours, deploying the next seismometer in the dark.

[Read more →]

Tags:·

Most Northern Deployment

October 18th, 2011 · No Comments · 2011 - R/V Wecoma, Deployment

[Read more →]

Tags:·

Second Day at Sea

October 16th, 2011 · No Comments · 2011 - R/V Wecoma, 2011 Crew, Deployment, LDEO, SIO

Yesterday, we deployed three seismometers, two “Abalones” from Scripps Institute of Oceanography with the trawl resistant design and one from the Lamont-Doherty Earth Observatory (LDEO) called “Cascadian” which also has an absolute pressure gauge and hydrophone. These seismometers are generally deployed deeper along the continental margin.  

[Read more →]

Tags:··

Ocean Bottom Seismometers

October 15th, 2011 · No Comments · 2011 - R/V Wecoma, 2011 Crew, LDEO

There are two sets of Ocean Bottom Seismometers (OBS), 10 were built by Lamont-Doherty Earth Observatory (LDEO) and include pressure gauges. The pressure gauges are for sensing vertical seafloor uplift and will be deployed on the edge of the continental margin to detect strain accumulation between the North American and Juan de Fuca plates. The […]

[Read more →]

Tags:·

Leaving Newport

October 15th, 2011 · 3 Comments · 2011 - R/V Wecoma

   

[Read more →]

Tags:··