Asset Details
Do you wish to reserve the book?
Marine DC resistivity and self-potential survey in the hydrothermal deposit areas using multiple AUVs and ASV
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Marine DC resistivity and self-potential survey in the hydrothermal deposit areas using multiple AUVs and ASV
Do you wish to request the book?
Marine DC resistivity and self-potential survey in the hydrothermal deposit areas using multiple AUVs and ASV
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Marine DC resistivity and self-potential survey in the hydrothermal deposit areas using multiple AUVs and ASV
2020
Overview
Detecting resistivity and self-potential (SP) anomalies is useful for the exploration of hydrothermal deposits. Using autonomous underwater vehicles (AUVs) can increase survey effectiveness because it allows stable posture control without a towing wire cable from a ship. We propose a new style for geophysical surveys using multiple AUVs without a towing electrode cable for marine direct current resistivity (MDCR) and SP survey. We used two AUVs for electrical signal transmission and their receiver. We successfully conducted MDCR and SP surveys in hydrothermal deposit areas using two AUVs with 20 m tow-rods. One AUV was assisted by an autonomous surface vehicle (ASV) for monitoring and controlling via satellite and the public broadband mobile communications radiowave. The survey covered an area of about 1 square kilometer, spending only 4 hours near the seafloor with the vehicle’s speed maintained at 2 - 2.5 knots at distance between the AUVs of 200 - 300 m during most of the survey. The SP and apparent resistivity were calculated along the main survey line crossing known hydrothermal mounds of sulfide ore. The distribution of the negative SP anomalies obtained in the dive is similar to that obtained from our earlier survey using a deep-tow. The apparent resistivity is generally low (0.2 ohm-m or less) above the mounds. The averaged distance between the vehicles and the averaged altitude are respectively about 250 and 70 m. Therefore, the estimated apparent resistivities are the averaged value to several tens of meters below the seafloor. These positions show good agreement with the locations of known hydrothermal deposits.
