Results 41 to 50 of about 28,554 (282)
Advanced Mid-Water Tools for 4D Marine Data Fusion and Visualization [PDF]
, 2009 Mapping and charting of the seafloor underwent a revolution approximately 20 years ago with the introduction of multibeam sonars -- sonars that provided complete, high-resolution coverage of the seafloor rather than sparse measurements. The initial focus
Arsenault, Roland J. +6 more
core +1 more source
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 +3 more
wiley +1 more source
Seafloor Video Mapping: Modeling, Algorithms, Apparatus [PDF]
, 2002 This paper discusses a technique used for construction of high-resolution image mosaic from a videosequence and the synchronously logged camera attitude information. It allows one to infer geometric characteristics of the imaged terrain and hence improve
Cutter, Randy G, Jr. +2 more
core +1 more source
The Impact of Acoustic Imaging Geometry on the Fidelity of Seabed Bathymetric Models [PDF]
, 2018 Attributes derived from digital bathymetric models (DBM) are a powerful means of analyzing seabed characteristics. Those models however are inherently constrained by the method of seabed sampling. Most bathymetric models are derived by collating a number
Hughes Clarke, John E.
core +4 more sources
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 +4 more
wiley +1 more source
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
Sensor-Assisted Video Mosaicing for Seafloor Mapping [PDF]
, 2001 This paper discusses a proposed processing technique for combining video imagery with auxiliary sensor information. The latter greatly simplifies image processing by reducing complexity of the transformation model.
Cutter, Randy G, Jr. +2 more
core +1 more source
Biological Reviews, EarlyView.ABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Jon Dickson +9 more
wiley +1 more source
Frontiers in Remote SensingMultibeam 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 +5 more
doaj +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. +3 more
core +1 more source