1

I am reading an article on Science about collecting sound of underwater species, which is in the Q&A form. Part of this article says:

Q: Do your hydrophones ever … float away?

A: Oh yeah. In a freshwater bay, I had one I’m pretty convinced someone dragged away. We don’t mark them—otherwise curious people pick them up—but I had a ground line running along [this] hydrophone so I could find it later. I think someone [accidentally] put their anchor down and dragged it off somewhere.

I don't understand what the interviewee mean by "ground line" here. I cannot imagine what "a ground line running along [this] hydrophone" describes.

2
  • 1
    A line here is A length of cord, rope, wire, or other material serving a particular purpose. The device has no marker, so a line is attached to the shore so that the owner can find it later. To ground something is to Connect with the ground. Feb 26, 2022 at 16:59
  • I think he means the same thing as a ground cable. However, I don't see how putting one along the hydrophone helps to locate it unless the cable has some electronics in it.
    – Lambie
    Feb 26, 2022 at 17:52

1 Answer 1

1

A groundline is part of a fishing setline that anchors the set to the bed.

enter image description here

It sounds like similar equipment was used to anchor the recording equipment underwater.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .