Sea Glider Recovery

This afternoon I helped out on a boat trip to recover one of the sea gliders from South Cove.

There are in fact two science teams here this year using sea gliders.  The particular glider I went out to help collect had an acoustic instrument deployed that can detect krill.  Another glider is being used to conduct survey missions underneath ice shelves.

The gliders have an internal bladder that can be inflated and deflated to displace water.  When the glider bladder is inflated the glider it is buoyant and rises and when the bladder is deflated the glider gradually sinks.  The wings and fins allow the glider to move and make progress as it rises and sinks.

Glider wings
Glider wings

The gliders transmit their position back to base via a satellite link.

We used the coordinates transmitted by the glider to find it
We used the coordinates transmitted by the glider to find it
Then manhandled the glider onto a cradle
Then manhandled the glider onto a cradle
Safely back in the Bonner Lab where the acoustics can be retrieved from the instrument
Safely back in the Bonner Lab where the acoustics can be retrieved from the instrument

3 thoughts on “Sea Glider Recovery

  1. Hello Cathy. My name is Ruby Dobson. I’m Graham Dobson’s granddaughter. I’m 7yrs old and I attend PerryHall Primary School. We are doing a project on Antartica at school. Can I ask if you’ve seen any Orca whales this summer? I would really love to hear from you about this. Thank you for your time. Ruby x.

    Like

    1. Hello Ruby,

      Lovely to hear from you and a big shout out to you all at Perry Hall.
      That is a very good question. We do get humpback, minke and orca whales visiting the station.
      So far this season I have only seen minke whales, but some of my friends who do more boating than me have seen Orcas.
      I have seen a lot of seals and penguins. Can you guess what types of seals and penguins I might have seem ?

      Like

      1. Hi Cathy.
        Thank you for your reply! I think you might have seen some Emperor Penguins and possibly Leopard Seals? We learnt that they live in Antartica at school.
        Thank you again, Ruby x

        Like

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s