Results 11 to 20 of about 26,633 (306)

Horizon Picking from SBP Images Using Physicals-Combined Deep Learning

open access: yesRemote Sensing, 2021
Horizon picking from sub-bottom profiler (SBP) images has great significance in marine shallow strata studies. However, the mainstream automatic picking methods cannot handle multiples well, and there is a need to set a group of parameters manually ...
Jie Feng   +3 more
doaj   +1 more source

An Integrated Horizon Picking Method for Obtaining the Main and Detailed Reflectors on Sub-Bottom Profiler Sonar Image

open access: yesRemote Sensing, 2021
A sub-bottom profiler (SBP) can capture the sediment interfaces and properties of different types of sediment. Horizon picking from SBP images is one of the most crucial steps in marine sub-bottom sediment interpretation.
Shaobo Li   +3 more
doaj   +1 more source

Creep characteristics of muddy submarine channel slope instability

open access: yesFrontiers in Marine Science, 2022
Creep is an important factor of muddy submarine channel slope instability. In this study, a sub-bottom profiler was used to monitor the continuous internal change of a muddy submarine channel slope in the laboratory to better understand the creep ...
Cunyong Zhang, Jiankang Hou
doaj   +1 more source

Research on Seabed Sediment Classification Based on the MSC-Transformer and Sub-Bottom Profiler

open access: yesJournal of Marine Science and Engineering, 2023
This paper proposed an MSC-Transformer model based on the Transformer’s neural network, which was applied to seabed sediment classification. The data came from about 2900 km2 of seabed area on the northern slope of the South China Sea.
Han Wang   +5 more
doaj   +1 more source

Optimizing Source Wavelets Extracted from the Chirp Sub-Bottom Profiler Using an Adaptive Filter with Machine Learning

open access: yesJournal of Marine Science and Engineering, 2022
In this study, we extracted three source wavelets of a Chirp sub-bottom profiler (SBP), which is widely used for high-resolution marine seismic exploration, using a MATLAB-based graphical user interface tool for computational processing.
Sung-Bo Kim, Hong-Lyun Park
doaj   +1 more source

A Novel Horizon Picking Method on Sub-Bottom Profiler Sonar Images

open access: yesRemote Sensing, 2020
Traditional manual horizon picking is time-consuming and laborious, while automatic picking methods often suffer from the limited scope of their applications and the discontinuity of picked results.
Shaobo Li   +4 more
doaj   +1 more source

Sub-Bottom Sediment Classification Using Reliable Instantaneous Frequency Calculation and Relaxation Time Estimation

open access: yesRemote Sensing, 2021
The shift in IF (instantaneous frequency) series and the corresponding relaxation time have the potential to characterize sediment properties. However, these attributes derived from SBP (sub-bottom profiler) data are seldom used for offshore site ...
Shaobo Li   +3 more
doaj   +1 more source

Observations of Near-Surface Mixing Behind a Headland

open access: yesJournal of Marine Science and Engineering, 2020
Field observations were collected near the mouth of the Bagaduce River, Maine, in order to understand how complex features affect the intratidal and lateral variability of turbulence and vertical mixing.
Preston Spicer, Kimberly Huguenard
doaj   +1 more source

Submergence of the Western Greco-Roman Archaeological Site at the Eastern Harbor of Alexandria: Emerged from High Resolution Geophysical Mapping

open access: yesQuaternary, 2021
Marine geophysical surveys were carried out at the underwater site in the south-western sector of the Eastern Harbor of Alexandria, opposite to the Egyptian Sea Scout Club.
Amr Hamouda   +4 more
doaj   +1 more source

Fault and magmatic interaction within Iceland's western rift over the last 9kyr [PDF]

open access: yes, 2003
We present high-resolution 'Chirp' sub-bottom profiler data from Thingvallavatn, a lake in Iceland's western rift zone. These data are combined with stratigraphic constraints from sediment cores to show that movement on normal faults since 9 ka are ...
A. I. Best   +13 more
core   +1 more source

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