scholarly journals Rip Current Observations at Egmond aan Zee

10.3990/2.206 ◽  
2012 ◽  
Author(s):  
G. Winter ◽  
A.R. van Dongeren ◽  
M.A. de Schipper ◽  
J.S.M. van Thiel de Vries
Keyword(s):  
Rip Current

THE IMPROVEMENT OF RISK MANAGEMENT AWARENESS BY VISUALIZED RIP CURRENT AMONG BEACH USERS

2019 ◽  
Vol 75 (2) ◽  
pp. I_701-I_706
Author(s):  
Shintaro ENDO ◽  
Haruka SHIMOIDA ◽  
Toshinori ISHIKAWA ◽  
Tsutomu KOMINE
Keyword(s):  
Risk Management ◽  
Rip Current

Rip Current Research Using a CCTV Image Analysis Including Swimmer Detecting Techniques at Haeundae Beach, Korea

2014 ◽  
Vol 72 ◽  
pp. 33-38 ◽  
Author(s):  
Jin Sang Hwang ◽  
Hong Sik Yun ◽  
Yong Cheol Suh ◽  
Jooyong Lee ◽  
Seong Chan Kang
Keyword(s):  
Image Analysis ◽  
Rip Current

Rip current rescues on unguarded beaches

Shore & Beach ◽  
2021 ◽  
pp. 41-45
Author(s):  
Aubrey Litzinger ◽  
Stephen Leatherman
Keyword(s):  
Young Person ◽  
Red Cross ◽  
Rip Current ◽  
Rip Currents ◽  
Water Ring ◽  
The U.S

Rip currents are the greatest danger at surf beaches. Professional lifeguards rescue tens of thousands of people every year at U.S. beaches, but only a small percentage of the nation’s beaches are guarded. Oftentimes it is a young person who is caught in a rip current, and a bystander will attempt a rescue without a flotation device. The U.S. Lifesaving Association strongly suggests that this kind of rescue should not be undertaken because too often the rescuer will drown. Some coastal towns such as Cocoa Beach in Florida are now posting ring buoys on their unguarded beaches with the warning to throw, but not to go into the water. Ring buoys of two different weights were tested for efficiency when thrown in terms of distance and accuracy. The participants threw the ring buoys two different ways: one way of their choosing (un-instructed) and second by Red Cross recommendation (instructed). The buoyancy was also tested for each buoy. While these flotation devices have some merit, they clearly have limitations.

Controls on Flash Rip Current Hazard on Low-Tide Terraced Tropical Beaches in West Africa

2018 ◽  
Vol 81 (sp1) ◽  
pp. 92 ◽  
Author(s):  
Bruno Castelle ◽  
Tim Scott ◽  
Rafael Almar ◽  
Nadia Senechal
Keyword(s):  
West Africa ◽  
Rip Current

scholarly journals Rip current evidence by hydrodynamic simulations, bathymetric surveys and UAV observation

2017 ◽  
Author(s):  
Guido Benassai ◽  
Pietro Aucelli ◽  
Giorgio Budillon ◽  
Massimo De Stefano ◽  
Diana Di Luccio ◽  
...  
Keyword(s):  
Grain Size ◽  
High Resolution ◽  
Numerical Simulations ◽  
Current System ◽  
Current Evidence ◽  
Rip Current ◽  
Rip Currents ◽  
Transport Pathways ◽  
Fine Sediments ◽  
Scientific Challenge

Abstract. The prediction of the formation, spacing and location of rip currents is a scientific challenge that can be achieved by means of different complementary methods. In this paper the analysis of numerical and experimental data, including UAV observation, allowed to detect the presence of rip currents and rip channels at the mouth of Sele river, in the Gulf of Salerno, southern Italy. The dataset used to analyze these phenomena consisted of two different bathymetric surveys, a detailed sediment 5 analysis and a set of high-resolution wave numerical simulations, completed with satellite and UAV observation. The grain size trend analysis and the numerical simulations allowed to identify the rip current system, forced by topographically constrained channels incised on the seabed, which were detected by high resolution bathymetric surveys. The study evidenced that on the coastal area of the Sele mouth grain-size trends are controlled by the contribution of fine sediments, which exhibit suspended transport pathways due to rip currents and longshore currents. The results obtained were confirmed by satellite and UAV 10 observations in different years.

Megaripple/Flat Bed Transition in Rip Current Channels

2018 ◽  
Vol 85 ◽  
pp. 246-250
Author(s):  
Douglas J. Sherman
Keyword(s):  
Rip Current

Rip Current Generation on a Plane Beach

1997 ◽  
Author(s):  
D.A. Suriamihardja ◽  
Yoshito Tsuchiya
Keyword(s):  
Rip Current ◽  
Current Generation

scholarly journals TIPOLOGI PESISIR KAWASAN KARST KABUPATEN WONOGIRI

2017 ◽  
Author(s):  
Ahmad Cahyadi ◽  
Ardila Yananto ◽  
Filialdi Nur Hidayat
Keyword(s):  
Rip Current ◽  
Erosion Coast ◽  
Wave Erosion

Penelitian ini bertujuan untuk (1) menganalisis tipologi pesisir di Kawasan Karst Kabupaten Wonogiri, Provinsi Jawa Tengah, (2) Menganalisis potensi yang terdapat di lokasi kajian, dan (3) menganalisis permasalahan yang ada di lokasi kajian. Penentuan tipologi pesisir didasarkan pada klasifikasi Shepard (1972) yang termuat dalam pedoman survei cepat terintegrasi yang disusun oleh Fakultas Geografi UGM dan BAKOSURTANAL (sekarang BIG). Analisis potensi dan permasalahan dilakukan dengan melakukan survei lapangan, wawancara, dan kajian pustaka. Hasil kajian menunjukkan bahwa tipologi pesisir di Kabupaten Wonogiri terdiri dari tiga jenis tipologi pesisir, yaitu; wave erosion coast, marine deposition coast dan structurally shaped coast; potensi pesisir Kabupaten Wonogiri terdiri dari potensi pariwisata, pertanian, peternakan dan perikanan; dan permasalahan yang ada di pesisir Kabupaten Wonogiri terdiri dari sarana dan prasarana yang terbatas, aksesibilitas yang kurang baik, bencana tsunami, rip current dan keterbatasan sumberdaya air.

scholarly journals Sistem Informasi Geografis Risiko Kemunculan Rip Current Menggunakan Decision Tree C4.5

2016 ◽  
Vol 10 (2) ◽  
pp. 195
Author(s):  
Made Leo Radhitya ◽  
Agus Harjoko
Keyword(s):  
Decision Tree ◽  
Rip Current ◽  
Evaluation Result ◽  
Average Recall ◽  
C4.5 Algorithm ◽  
F Measure

One of the dangers that occur at the beach is rip current. Rip current poses significant danger for beachgoers. This paper proposes a method to predict the rip current's occurence risk by using decision tree generated using C4.5 algorithm. The output from the decision tree is rip current's occurrence risk. The case study for this research is the beach located at Rote Island, Rote Ndao, Nusa Tenggara Timur. Evaluation result shows that the accuracy is 0.84, and the precision is 0.61. The average recall value is 0.68 and the average F-measure is 0.59 in the range 0 to 1.

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