scholarly journals EXPERIMENTAL ANALYSIS OF EROSIVE COHESIVE COASTLINE MORPHOLOGY

2011 ◽  
Vol 1 (32) ◽  
pp. 53
Author(s):  
Bastien Caplain ◽  
Dominique Astruc ◽  
Vincent Regard ◽  
Frédéric Moulin
Keyword(s):  
Laboratory Experiments ◽  
Regular Waves ◽  
Similarity Parameter ◽  
Wave Flume ◽  
Cliff Erosion ◽  
Recession Rate ◽  
Self Organized ◽  
Coastal Cliff ◽  
Wave Energy Flux

Laboratory experiments have been performed in a wave flume to investigate the coastal cliff recession under regular waves forcing. The different processes of the cliff erosion cycle are described and we focus on bottom evolution, which seem mostly depend on the surf similarity parameter ξ. We observed steep planar (ξ > 0.7), gentle planar (0.5 < ξ < 0.7) and bared (ξ < 0.5) profiles. We noticed different sandbar dynamics including either steady or unsteady self-sustained oscillating states. Then we estimate the role of the self-organized material on the cliff recession rate. We show that the cliff erosion increases with the wave energy flux and is stronger for a gentle planar profile than for a bared profile of bottom morphology. However, the cliff recession rate as a function of the cliff height is not monotonic due to a different dynamics of bottom morphologies.

Experimental Studies of Surface Wave Reflection by Longshore Bars and a Sloping Seawall

2002 ◽  
Author(s):  
P. Dong ◽  
Y. Wang
Keyword(s):  
Laboratory Experiments ◽  
Wave Reflection ◽  
Experimental Studies ◽  
Considerable Influence ◽  
Wave Surface ◽  
Regular Waves ◽  
Wave Flume ◽  
The Waves ◽  
Resonant Reflection ◽  
Reflection Characteristics

Laboratory experiments have been performed to investigate the effects of a seawall on resonant reflection by a fixed periodic bar system on the seabed. The experiments were conducted in a wave flume. A series of five fixed bars was placed in front of a seawall with 1:1 slope. Regular waves with wave height 0.04m and wave periods from 0.8 to 1.20 seconds were used. The tests were performed for the cases with and without the seawall. The wave surface elevations were measured at seven locations in front of the seaward and in either side the bar patch. Based on the preliminary analysis of measured wave time series, it was found that the presence of the seawall has considerable influence on the reflection characteristics of the waves in front of the bar field.

scholarly journals The role of beach morphology on coastal cliff erosion under extreme waves

2018 ◽  
Vol 43 (6) ◽  
pp. 1213-1228 ◽  
Author(s):  
Claire Earlie ◽  
Gerhard Masselink ◽  
Paul Russell
Keyword(s):  
Extreme Waves ◽  
Beach Morphology ◽  
Cliff Erosion ◽  
Coastal Cliff

Observation and Experimentation

2018 ◽  
Author(s):  
Massimiliano Di Ventra
Keyword(s):  
Laboratory Experiments ◽  
The Difference

This chapter expands on the previous one on the role of experiments in Science. It explains the difference between observations of phenomena and controlled laboratory experiments.

The role of asymmetric excitation in self-organized nanostructure formation upon femtosecond laser ablation

2011 ◽  
Vol 104 (3) ◽  
pp. 969-973 ◽  
Author(s):  
Juergen Reif ◽  
Olga Varlamova ◽  
Sergej Varlamov ◽  
Michael Bestehorn
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Nanostructure Formation ◽  
Self Organized

How much would you like to pay? Trust, reciprocity and prosocial motivations in El trato

2012 ◽  
Vol 51 (3) ◽  
pp. 389-417 ◽  
Author(s):  
Francisco J León ◽  
José A Noguera ◽  
Jordi Tena-Sánchez
Keyword(s):  
Social Science ◽  
External Validity ◽  
Laboratory Experiments ◽  
Social Science Research ◽  
Science Research ◽  
Trust Game ◽  
Sales Strategy ◽  
Pay What You Want ◽  
Natural Settings

Prosocial motivations and reciprocity are becoming increasingly important in social-science research. While laboratory experiments have challenged the assumption of universal selfishness, the external validity of these results has not been sufficiently tested in natural settings. In this article we examine the role of prosocial motivations and reciprocity in a Pay What You Want (PWYW) sales strategy, in which consumers voluntarily decide how much to pay for a product or service. This article empirically analyses the only PWYW example in Spain to date: the El trato (‘The deal’) campaign launched by the travel company Atrápalo, which offered different holiday packages under PWYW conditions in July 2009. Our analysis shows that, although the majority of the customers did not behave in a purely self-interested manner, they nonetheless did so in a much higher proportion than observed in similar studies. We present different hypotheses about the mechanisms that may explain these findings. Specifically, we highlight the role of two plausible explanations: the framing of the campaign and the attribution of ‘hidden’ preferences to Atrápalo by its customers, which undermined the interpretation of El trato as a trust game.

The Effect of Face Consciousness on Consumption of Counterfeit Luxury Goods

2014 ◽  
Vol 42 (6) ◽  
pp. 1007-1014 ◽  
Author(s):  
Yun-Qing Chen ◽  
Hong Zhu ◽  
Meng Le ◽  
Yi-Zhen Wu
Keyword(s):  
Purchase Intention ◽  
Laboratory Experiments ◽  
Positive Influence ◽  
Luxury Goods ◽  
Intention To Purchase ◽  
Luxury Item ◽  
Moderating Role ◽  
Chinese Undergraduates ◽  
Significant Positive Influence

We conducted 3 laboratory experiments to determine how face consciousness influences consumption of counterfeit luxury goods, along with the moderating roles of usage occasion and brand prominence. The participants in the first study were 138 Chinese undergraduates who were allocated to a 2 × 2 design to evaluate their intention to purchase a counterfeit luxury item that would be used either in public or in private. In Studies 2 and 3, using two 2 × 2 designs we evaluated the purchase intention of the participants (132 and 136, respectively) in order to investigate the moderating role of brand prominence. The results showed that participants' face consciousness had a significant positive influence on intention to purchase counterfeit luxury goods. In addition, the products' usage occasion and brand prominence positively moderated the influence that face consciousness had on counterfeit luxury item purchase intention of our participant groups.

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