NOAA Teacher at Sea
Onboard Research Vessel Hugh R. Sharp
May 9-20, 2009
Mission: Sea scallop survey
Geographical Area: North Atlantic
Date: May 18, 2009
Weather Data from the Bridge
Scattered showers, thunderstorms
Temp: 9.28˚ C
True wind: 13.4 KT
Science and Technology Log
Today a video camera was attached to the dredge. Using the camera they are able to see when the dredge is actually on the ground to determine the amount of bottom contact. It is important to verify sensors like these anytime you work in science. The inclinometer records angle changes that we can interpret into a time on bottom which can be used to calculate a tow distance or bottom contact. This is compared to the tow distance calculated from the GPS recorded by FSCS. Unfortunately, the inclinometer angle change is not abrupt enough to determine the start time, so the camera is used to determine the amount of time before we start recording tow distance with FSCS.
We have two days of sampling left and then we begin to clean and pack. The first dredge today brought up so many sand dollars that they had to shovel some away before they could even secure the dredge! By late afternoon we were back into starfish; in all the dredges the scallop count was comparatively small.
Around 4PM the skies cleared and we had sunshine again! It was a welcome sight after days of fog, cloud cover, and cold. That, along with calmer seas, made for a great day. Sitting on deck in the warmth of the Sun watching the wave action, I reflect all the different moods of the sea I have seen. I also think about all the wondrous animals I have seen; and wonder about how much more life there is that we didn’t see.