Doug Hrvoic Marine Magnetics No description specified. 1-3 (3 Records) Documents Chasing the Gradient: A New Diver-Held Tool for Locating Buried Shipwreck Remains in Magnetically Challenging Environments (2020) Development and Refinement of the Argos Diver-Held Magnetic Gradiometer (2023) Magnetic Survey for Cortes’ Fleet in Villa Rica Bay, Mexico (2020)