Results 41 to 50 of about 28,411 (301)

The International Bathymetric Chart of the Arctic Ocean (IBCAO) Version 3.0 [PDF]

, 2012
[1] The International Bathymetric Chart of the Arctic Ocean (IBCAO) released its first gridded bathymetric compilation in 1999. The IBCAO bathymetric portrayals have since supported a wide range of Arctic science activities, for example, by providing ...
Accettella, Daniela, Anderson, Robert M., Armstrong, Andy, Beinhoff, Paul, Camerlenghi, Angelo, Church, Ian, Coakley, Bernard, Dowdeswell, Julian A., Edwards, Margo, Forbes, Steve, Fridman, Boris, Gardner, James V., Hall, John K., Hell, Benjamin, Hestvik, Ole, Hodnesdal, Hanne, Jakobsson, Martin, Krisoffersen, Yngve, Marcussen, Christian, Mayer, Larry A., Mohammad, Rezwen, Mosher, David, Nghiem, Son V., Noormets, Riko, Pedersen, Richard, Pedrosa, Maria Teresa, Rebesco, Michele, Schenke, Hans Werner, Travaglini, Paola G., Weatherall, Pauline, Zarayskaya, Yulia   +30 more
core   +2 more sources

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

The Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li, Mike Schindler, Martha Paskin, Venkata A. Surapaneni, Elliott Scott, Sabine Hauert, Nicholas Payne, David E. Cade, Jeremy A. Goldbogen, Frederik H. Mollen, Daniel Baum, Sean Hanna, Mason N. Dean   +12 more
wiley   +1 more source

Sensor-assisted Video Mapping of the Seafloor [PDF]

, 2002
In recent years video surveys have become an increasingly important ground-truthing of acousticseafloor characterization and benthic habitat mapping studies. However, the ground-truthing and detailed characterization provided by video are still typically
Cutter, Randy G, Jr., Huff, Lloyd C, Mayer, Larry A., Rzhanov, Yuri   +3 more
core   +1 more source

Time dependent seafloor acoustic backscatter (10-100kHz) [PDF]

, 2003
A time-dependent model of the acoustic intensity backscattered by the seafloor is described and compared with data from a calibrated, vertically oriented, echo-sounder operating at 33 and 93 kHz.
de Moustier, Christian, Sternlicht, Daniel D   +1 more
core   +3 more sources

Patterns of spinal motion, kinematic spaces and the land‐to‐sea transition in carnivorans

The Anatomical Record, EarlyView.
Using 3D reconstructions, we quantify intervertebral joint mobility to investigate how cervical, thoracic, and lumbar vertebral regions evolved distinct kinematic roles in pinnipeds. The findings reveal lineage‐specific adaptations for swimming and highlight the functional significance of vertebral joint flexibility in ecological transitions.
Juan Miguel Esteban, Alberto Martín‐Serra, Alejandro Pérez‐Ramos, Borja Figueirido   +3 more
wiley   +1 more source

Developing an acceptance test for non-hydrographic airborne bathymetric lidar data application to NOAA charts in shallow waters [PDF]

, 2013
Hydrographic data of the National Oceanic and Atmospheric Administration are typically acquired using sonar systems, with a small percent acquired via airborne lidar bathymetry for nearshore areas.
Imahori, Gretchen, Jeong, Inseong, Macon, Christopher L, Parrish, Christopher, Pe\u27eri, Shachak, White, Stephen A, Wozumi, Toshi   +6 more
core   +2 more sources

Satellite radar altimetry aids seafloor mapping

Eos, Transactions American Geophysical Union, 1991
The connection between gravity and oceanic water depth was realized more than a century ago. In 1859, J. H. Pratt derived a formula relating anomalous vertical deflection and sea level height on the coast of India to the depth of the adjacent Indian Ocean.
Peter R. Vogt, Woo‐Yeol Jung
openaire   +1 more source

Automated Feature Extraction and Classification of Submerged Cultural Heritage Assets in the Puck Lagoon via Multisensor Remote Sensing

Archaeological Prospection, EarlyView.
ABSTRACT This study presents a strong framework for the detection and classification of Submerged Cultural Heritage Assets (SCHA) in shallow marine environments using the integration of multibeam echosounder and airborne LiDAR bathymetry with object‐based image analysis and fuzzy logic–based classification.
Łukasz Janowski, Andrzej Pydyn, Mateusz Popek, Anna M. Kotarba‐Morley, Paweł Tysiąc   +4 more
wiley   +1 more source

Multifrequency seafloor acoustic backscatter as a tool for improved biological and geological assessments – updating knowledge, prospects, and challenges

Frontiers in Remote Sensing
Multibeam echosounders (MBES) have emerged as a primary tool for seafloor mapping over the past three decades. Technological advancements and improved data processing methods have increased the accuracy and spatial resolution of bathymetric measurements,
Pedro S. Menandro, Benjamin Misiuk, Benjamin Misiuk, Jens Schneider von Deimling, Alex C. Bastos, Craig J. Brown   +5 more
doaj   +1 more source

Near bottom sediment characterization offshore SW San Clemente Island [PDF]

, 2002
Normal incidence, 23.5 kHz seafloor acoustic backscatter data and bottom video were measured with the Deep Tow instrument package of the Scripps Institution of Oceanography in 100 meter water depth south of San Clemente Island, CA.
de Moustier, Christian, Sternlicht, Daniel D   +1 more
core   +1 more source