13. The ULF sensor package in its sled being pulled out from the ULF package. It is then dragged about 10 m away for installation, which requires burial of the white caisson seen in the picture.
13. The ULF sensor package in its sled being pulled out from the ULF package. It is then dragged about 10 m away for installation, which requires burial of the white caisson seen in the picture.