Results 91 to 100 of about 4,968,542 (275)

Optimizing Strategies for Non‐Invasive Prospection of Settlements in the Intertidal Zone: A Case Study From the Centre of the Drowned Medieval Village of Tolsende (Scheldt Estuary, the Netherlands)

Archaeological Prospection, EarlyView.
ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet, Sarah Bäumler, Stefan Krojer, Jeroen Verhegge, Wim De Clercq, Philippe De Smedt, Wouter H. Maes, Bente S. Majchczack, Immo Trinks, Dennis Wilken   +9 more
wiley   +1 more source

Geometric bounding techniques for underwater localisation using range-only sensors

This paper describes the application of geometric bounding techniques to range-only navigation of an underwater vehicle. A geometric technique is defined to obtain a position fix of an underwater vehicle using a combination of dead-reckoning navigation ...
Veres, Sandor M., Morice, Colin P.
core   +1 more source

Underwater Rescue Target Detection Based on Acoustic Images

Sensors
In order to effectively respond to floods and water emergencies that result in the drowning of missing persons, timely and effective search and rescue is a very critical step in underwater rescue.
Sufeng Hu, Tao Liu
doaj   +1 more source

Underwater Wireless Sensor Networks: How Do Acoustic Propagation Models Impact the Performance of Higher-Level Protocols?

Sensors, 2012
Several Medium Access Control (MAC) and routing protocols have been developed in the last years for Underwater Wireless Sensor Networks (UWSNs). One of the main difficulties to compare and validate the performance of different proposals is the lack of a ...
Jesús Llor, Manuel P. Malumbres
doaj   +1 more source

Measuring acoustic habitats [PDF]

, 2015
NDM was part-funded by an EPSRC Doctoral Training Award (No. EP/P505399/1). MPJ and PLT were supported by Marine Alliance for Science and Technology Scotland (MASTS) and MPJ by a Marie Curie CIG Award.Many organisms depend on sound for communication ...
Nathan D. Merchant, Matthew J. Witt, Tyack, P.L., Blondel, Philippe, Philippe Blondel, Witt, Matthew J., Johnson, Mark P., Merchant, Nathan D., Merchant, N.D., Parks, S.E., Kurt M. Fristrup, Susan E. Parks, Fristrup, K.M., Witt, M.J., Tyack, Peter L., Parks, Susan E., Mark P. Johnson, Blondel, P., Fristrup, Kurt M., Johnson, M.P., Peter L. Tyack, Hatta, Arief   +21 more
core   +1 more source

Technology Transfer to Underwater Archaeology: The LAHKE Project at the Submerged Neolithic Site of La Marmotta

Archaeological Prospection, EarlyView.
ABSTRACT This document is a report on the field application of non‐invasive geophysical and robotic prospecting methods at the submerged Neolithic site of La Marmotta (Lake Bracciano, Italy), within the LAHKE (LAke Heritage Knowledge and Exploration) project; the study focuses on the practical validation, adaptation and transfer of existing ...
dell' Erba Ramiro, Cupertino Giacomo, Cipollini Angelo, Luciano Blasi, Quattrucci Luca   +4 more
wiley   +1 more source

AOPQ-Net Acoustic–Optical Proposal Query Network for Underwater Multimodal Object Detection

Remote Sensing
Optical cameras and imaging sonars are widely used sensors in autonomous underwater vehicles. However, their different imaging mechanisms introduce substantial cross-modal discrepancies in the acquired data.
Yanze Lu, Zhengyan Zhang, Shuoshuo Ding, Haochen Hu, Chih-Yung Wen, Tiedong Zhang   +5 more
doaj   +1 more source

Underwater Acoustic Networks: The FP7 UAN Project

IFAC Proceedings Volumes, 2012
Abstract The EU-funded project UAN - Underwater Acoustic Network aims at conceiving, developing and testing at sea an innovative and operational concept for integrating in a unique communication system submerged, surface and aerial sensors with the objective of protecting off-shore and coastline critical infrastructures.
CAITI, ANDREA, Husoy T., Jesus S. M., Karasalo I., Massimelli R., Munafò A., Reinen T. A., Silva A.   +7 more
openaire   +3 more sources

Portable acoustic source unit [PDF]

, 2009
SiPLAB Report 05/09, FCT, University of Algarve,2009.This document describes a Portable Acoustic Source Unit, which is a system composed of an acoustic projector (Lubell LL916C) and a waterproof case containing all the electronics.
Saleiro, Mário
core  

Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs

Deep Underground Science and Engineering, EarlyView.
A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao, Shuheng Du, Yuan Zhang, Jinghong Hu, Bo Zhou, Yun Wei   +5 more
wiley   +1 more source