Subaerial beach morphology change from multiple storms during the 2020 hurricane season

Shore & Beach ◽  
2021 ◽  
pp. 65-74
Author(s):  
Tiffany Roberts Briggs ◽  
Nicholas Brown ◽  
Michael Priddy
Keyword(s):  
Spatiotemporal Variability ◽  
Palm Beach County ◽  
Morphology Change ◽  
Cumulative Volume ◽  
Global Positioning ◽  
Hurricane Season ◽  
Northern Portion ◽  
Erosion And Accretion ◽  
Rtk Gps ◽  
Contour Change

Frequent or consecutive storms impacting coastal areas can result in unexpected or variable impacts. This study evaluates spatiotemporal variability and cumulative impacts on the subaerial beach from four major tropical storms of varying intensity and proximity impacting the study area of Palm Beach County, Florida, during the 2020 Atlantic Basin Hurricane season. Impacts from Hurricanes Isaias, Laura, Sally, and Teddy were measured using Real-Time Kinematic Global Positioning System (RTK GPS) at 14 transects throughout the northern and southern portion of the county. Alongshore morphologic variability resulted from each storm, with some expected patterns of erosion and accretion with a few unexpected impacts. The first three storms caused swash or collision regime impacts on the Sallenger scale. Hurricane Teddy was the fourth storm to impact the study area, causing overwash at numerous locations. Whereas the first two storms of the season caused mostly erosion of the subaerial beach, the southeasterly approach of Hurricane Sally reversed the cumulative volume loss trend in the northern portion of the study area with accretion. Hurricane Teddy was the most distant storm but occurred at the highest tide and produced the largest waves and highest winds. The most variable patterns in erosion and accretion resulted from Hurricane Teddy, which also dominated the overall (or cumulative) volume and contour change. Further study is recommended for a multi-storm season that includes the subaqueous portion of the beach profile to elucidate trends of cross-shore and alongshore drivers of storm-induced morphology change.

scholarly journals HEIGHT ACCURACY BASED ON DIFFERENT RTK GPS METHOD FOR ULTRALIGHT AIRCRAFT IMAGES

2015 ◽  
Vol XL-3/W3 ◽  
pp. 287-292
Author(s):  
K. N. Tahar
Keyword(s):  
Global Positioning System ◽  
Local Network ◽  
Ground Control ◽  
Positioning System ◽  
Control Points ◽  
Ground Control Points ◽  
Global Positioning ◽  
Time Correction ◽  
Rtk Gps ◽  
Gps Station

Height accuracy is one of the important elements in surveying work especially for control point’s establishment which requires an accurate measurement. There are many methods can be used to acquire height value such as tacheometry, leveling and Global Positioning System (GPS). This study has investigated the effect on height accuracy based on different observations which are single based and network based GPS methods. The GPS network is acquired from the local network namely Iskandar network. This network has been setup to provide real-time correction data to rover GPS station while the single network is based on the known GPS station. Nine ground control points were established evenly at the study area. Each ground control points were observed about two and ten minutes. It was found that, the height accuracy give the different result for each observation.

Performance Evaluation of Real-Time Kinematic GPS at Arctic Latitudes

2009 ◽  
Author(s):  
Alessio Salerno ◽  
Tom Lamarche ◽  
Erick Dupuis
Keyword(s):  
Performance Evaluation ◽  
Real Time ◽  
Global Positioning System ◽  
Ground Truth ◽  
Research Network ◽  
Real Time Kinematic ◽  
Global Positioning ◽  
Challenging Environment ◽  
Analogue Research ◽  
Rtk Gps

A real-time kinematic (RTK) global positioning system (GPS) has been identified for potentially being used as a ground-truth sensor for testing robotic rovers for planetary exploration. A series of environmental tests needs to be performed in order to validate the performance of the sensor at hand before being used as a ground-truth system. This paper focuses on the performance evaluation of the RTK GPS at Axel Heiberg Island Canadian Space Agency’s Analogue Research Network (CARN) site. This is one of the officially recognized terrestrial analogues, that is places on Earth that approximate the geological, environmental and putative biological conditions on Mars and other planetary bodies (Hipkin et al.). The challenge lies in the use of the equipment at Arctic latitudes. The results show that the system performed according to specifications even in this challenging environment.

scholarly journals A Robust Estimation Method for Correcting Dynamic Draft Error in PPK GPS Elevation Using ADCP Tilt Data

2014 ◽  
Vol 31 (3) ◽  
pp. 729-738 ◽  
Author(s):  
Pascal Matte ◽  
Yves Secretan ◽  
Jean Morin
Keyword(s):  
Estimation Method ◽  
Acoustic Doppler Current Profiler ◽  
Water Levels ◽  
Positioning Systems ◽  
Global Positioning ◽  
Elevation Data ◽  
Current Profiler ◽  
Rtk Gps ◽  
Using Data ◽  
Riverine Systems

Abstract Measuring temporal and spatial variations in water level with high resolution and accuracy can provide fundamental insights into the hydrodynamics of marine and riverine systems. Real-time kinematic global positioning systems (RTK GPS), and by extension postprocessed kinematic (PPK) positioning, have provided the opportunity to achieve this goal, by allowing fast and straightforward measurements with subdecimeter accuracy. However, boat-mounted GPS are subject to movements of the water surface (e.g., waves, long-period heaves) as well as to the effects of dynamic draft. The latter contaminate the records and need to be separated and removed from the data. A method is proposed to postcorrect the elevation data using tilt information measured by an attitude sensor—in this case, an acoustic Doppler current profiler (ADCP) equipped with internal pitch and roll sensors. The technique uses iteratively reweighted least squares (IRLS) regressions to determine the position of the center of rotation (COR) of the boat that leads to optimal corrections. The COR is also allowed to change in time by performing the IRLS analyses on data subsamples, thus accounting for changes in weight distribution, for example, due to personnel movements. An example of application is presented using data collected in the Saint Lawrence fluvial estuary. The corrections exhibit significant reductions associated with the boat motion while keeping subtle variations in water levels likely related to local hydrodynamics.

Low Cost and Centimeter-Level Global Positioning System Accuracy Using Real-Time Kinematic Library and Real-Time Kinematic GPSA

2019 ◽  
Vol 12 ◽  
Author(s):  
Hemant Kumar Gianey ◽  
Mumtaz Ali ◽  
V. Vijayakumar ◽  
Ashutosh Sharma ◽  
Rajiv Kumar
Keyword(s):  
Real Time ◽  
Global Positioning System ◽  
Low Cost ◽  
Base Station ◽  
Real Time Kinematic ◽  
Global Positioning ◽  
Rtk Gps ◽  
Set Up ◽  
Gps Accuracy ◽  
Gps System

Accuracy and total design and implementation cost of the GPS framework determine the viability of GPS based projects. As the greater part of the advanced framework including telemetry, IoT, Cloud, and AUTOSAR frameworks use GPS to get exact outcomes, finding a software-controlled error correction becomes important. With the execution of open source library such as RTKLIB will help in controlling and revising GPS blunders. The project utilizes the RTKLIB along with two stations for better accuracy. The RTK-GPS framework works under Linux environment, which is embedded in the Beagleboard. The communication between the GPS system is set up utilizing both serial communication protocol and TCP/IP suite. To get high precision inside the network, two GPS modules are utilized. One of them will be mounted on the rover and another GPS is the base station of the setup. Both the GPS will have a double radio wire setup to increase the reception level to reduce the noise and get centimeter-level precision. For long-range communication, Rover utilizes Wi-Fi with TCP/IP stack protocol. In this research paper, setup is intended to accomplish the centimeter level precision through libraries in a Linux environment. The design will be set up and tried on a college campus under various conditions with different error parameters to acquire a low cost and centimeter level GPS accuracy.

scholarly journals Hydrographic survey of a south Florida canal using a hydrolite

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
M. Berber ◽  
W. Wright
Keyword(s):  
Global Positioning System ◽  
South Florida ◽  
Gps Measurements ◽  
Single Beam ◽  
Network Rtk ◽  
Hydrographic Survey ◽  
Global Positioning ◽  
Rtk Gps ◽  
Best Fit ◽  
Lead Line

AbstractIn this study, a hydrographic map of a South Florida canal is prepared using RTK GPS (Real Time Kinematic Global Positioning System) measurements combined with a hydrolite (single beam echo sounder). RTK GPS measurements are made using both single RTK and Network RTK systems. Digital sounding measurements taken by hydrolite are compared to manual lead line measurements. Single RTK and Network RTK results differed in the order of tenth of a foot accuracy for horizontal coordinates and for height measurements variations can go up to several tenths. Sounding results indicate a best-fit trend line with a slope of 0.993, and an R squared value of 0.972, demonstrating that hydrolite measurements and manually collected depths at this site are well correlated.

Application of Low-Cost GPS Tools and Techniques for Landslide Monitoring: A Review

2014 ◽  
Vol 71 (4) ◽  
Author(s):  
E.E. Eyo ◽  
T. A. Musa ◽  
K. M. Omar ◽  
K. M. Idris ◽  
T. Bayrak ◽  
...  
Keyword(s):  
Monitoring System ◽  
Global Positioning System ◽  
Continuous Monitoring ◽  
Low Cost ◽  
Deformation Monitoring ◽  
Landslide Monitoring ◽  
Ongoing Research ◽  
Global Positioning ◽  
Rtk Gps ◽  
Tools And Techniques

The main goal of our ongoing research is to design a low-cost continuous monitoring system for landslide investigation using the Reverse RTK (RRTK) technique. The main objectives of this paper are to review the existing Global Positioning System (GPS) tools and techniques used for landslide monitoring, and to propose a novel low-cost landslide monitoring technique using Reverse RTK GPS. A general overview of GPS application in landslide monitoring is presented, followed by a review of GPS deformation monitoring systems and some of the factors used for their categorization. Finally, the concept, principles and advantages of the proposed new landslide monitoring system are discussed.

Torrid hurricane season in store

Nature ◽  
2007 ◽  
Author(s):  
Alexandra Witze
Keyword(s):  
Hurricane Season

GPS and GSM Based Tracking System for Objects Moving over Wide Geographical Areas

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Fatima Ameen ◽  
Ziad Mohammed ◽  
Abdulrahman Siddiq
Keyword(s):  
Global Positioning System ◽  
Mobile Communications ◽  
Moving Objects ◽  
Tracking System ◽  
Geographical Area ◽  
Tracking Systems ◽  
Acceptable Result ◽  
Internet Service ◽  
Global Positioning ◽  
Tracking Objects

Tracking systems of moving objects provide a useful means to better control, manage and secure them. Tracking systems are used in different scales of applications such as indoors, outdoors and even used to track vehicles, ships and air planes moving over the globe. This paper presents the design and implementation of a system for tracking objects moving over a wide geographical area. The system depends on the Global Positioning System (GPS) and Global System for Mobile Communications (GSM) technologies without requiring the Internet service. The implemented system uses the freely available GPS service to determine the position of the moving objects. The tests of the implemented system in different regions and conditions show that the maximum uncertainty in the obtained positions is a circle with radius of about 16 m, which is an acceptable result for tracking the movement of objects in wide and open environments.

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