Optimasi desain rencana tanggul lepas pantai NCICD di Teluk Jakarta terhadap kemungkinan tsunami akibat letusan Gunung Anak Krakatau

The infrastructural plans in the Jakarta Bay to reduce risks of flooding in Jakarta city comprise a large sea dike that encloses a retention lake. Part of the planned dike has the shape of the iconic Garuda bird. This shape is based on NCICD Stage-B Master Plan, where the form shape has not been tested on hydraulic perspective. Therefore, testing of wave run-up has been investiagated to find the optimum form of the Garuda Shape. The simulation of wave run-up uses Hawassi Model, where the model is governed by Boussinesq wave equation with considering wave-wave interaction. This paper shows that if in the future an explosion of Anak Krakatau will occur with strength 1/4th of the original Karkatau 1883 explosion, wave crests of 11m and troughs of 6m may collide against the birds head. As an alternative example, a more optimized design of the dike is constructed that reduces the maximal wave effects considerably.

Download Full-text

Wave Action on Double-Cylinder Structure With Perforated Outer Wall

Volume 1: Offshore Technology; Ocean Space Utilization ◽

10.1115/omae2003-37094 ◽

2003 ◽

Cited By ~ 5

Author(s):

Yucheng Li ◽

Lu Sun ◽

Bin Teng

Keyword(s):

Numerical Experiments ◽

Fluid Velocity ◽

Wave Interaction ◽

Outer Wall ◽

Wave Force ◽

Wave Loads ◽

Linear Solution ◽

Perforated Wall ◽

Physical Experiments ◽

Run Up

Based on an eigenfunction expansion of velocity potential and a linear model between the pressure difference between two sides of a perforated wall and the fluid velocity inside it, a semi-analytic linear solution has been acquired for wave interaction with a combined cylinder with an solid interior column surrounded by a coaxial exterior column with perforated wall at a section in azimuthal direction. Numerical experiments have been carried out to examine the influences on the wave force and wave run-up on the combined cylinders with perforated wall by the porous coefficient, the size of the perforated section, and the ratio between the radii of the interior and the exterior columns. This paper also presents the comparison between the numerical experiments results and the physical experiments results. It is acceptable of the comparison of these two results. The combined cylinder may reduce both the wave run-up and the wave loads on it through combination of certain parameters.

Download Full-text

Multi-method observation and analysis of an impulse wave and tsunami caused by glacier calving

The Cryosphere Discussions ◽

10.5194/tcd-9-6471-2015 ◽

2015 ◽

Vol 9 (6) ◽

pp. 6471-6493 ◽

Cited By ~ 5

Author(s):

M. P. Lüthi ◽

A. Vieli

Keyword(s):

Tsunami Wave ◽

Tide Gauge ◽

Impulse Wave ◽

West Greenland ◽

Tsunami Waves ◽

The Future ◽

History Of ◽

Impulse Waves ◽

Run Up

Abstract. Glacier calving can cause violent impulse waves which, upon landfall, can lead to destructive tsunami-like waves. Here we present data acquired during a calving event from Eqip Sermia, an ocean-terminating glacier in West Greenland. During an exceptionally well documented event, the collapse of 9 × 105 m3 ice from a 200 m high ice cliff caused an impulse wave of 50 m height, traveling at a speed of 25–30 m s-1. This wave was filmed from a tour boat in 800 m distance from the calving face, and simultaneously measured with a terrestrial radar interferometer and a tide gauge. Tsunami wave run-up height on the steep opposite shore in 4 km distance was 10–15 m, destroying infrastructure and eroding old vegetation. These observations indicate that such high tsunami waves are a recent phenomenon in the history of this glacier. Analysis of the data shows that only moderately bigger tsunami waves are to be expected in the future, even under rather extreme scenarios.

Download Full-text

The Iraq Crisis and the Future of the Western Alliance

The Cold War and After ◽

10.23943/princeton/9780691152028.003.0009 ◽

2012 ◽

Author(s):

Marc Trachtenberg

Keyword(s):

International Law ◽

Security Council ◽

Iraq War ◽

Mass Destruction ◽

Unilateral Action ◽

The Future ◽

Run Up ◽

Control Regime

This chapter considers the various issues raised in the run-up to the Iraq War. It asks: How much of a problem would the development of a mass destruction capability by a regime like that of Iraq in 2002 have actually posed? Wouldn't the development of an Iraqi nuclear capability have led to mutual deterrence and thus to a relatively stable strategic relationship? To the extent that an Iraqi capability of this sort would have posed serious problems, couldn't the Iraqis have been prevented permanently from developing such forces through nonmilitary means? Couldn't an inspection regime have done the trick? And if the control regime wasn't up to the job, would it be legitimate for a country to act essentially on its own, without first getting explicit U.N. Security Council authorization? Was unilateral action impermissible under international law, and is a country that dealt with the problem in that way to be branded a law-breaker?

Download Full-text

Between Patchwork and the Master Plan (1982) The Future Which Failed To Arrive (1982)

Who Plans the Planning? ◽

10.1515/9783035620306-009 ◽

2019 ◽

pp. 90-96

Keyword(s):

Master Plan ◽

The Future

Download Full-text

Wave Run-Up on Mortar-Grouted Riprap Revetments

Water ◽

10.3390/w12123396 ◽

2020 ◽

Vol 12 (12) ◽

pp. 3396

Author(s):

Moritz Kreyenschulte ◽

David Schürenkamp ◽

Benedikt Bratz ◽

Holger Schüttrumpf ◽

Nils Goseberg

Keyword(s):

Influence Factors ◽

Video Data ◽

Lidar Measurements ◽

Subsequent Discussion ◽

Porosity And Permeability ◽

Run Up ◽

Sea Dike ◽

Crest Height ◽

Sea Coast ◽

North Sea Coast

The wave run-up height is a crucial design parameter that determines the crest height of a sea dike and is used for estimating the number of overtopping waves. Therefore, a reduction of the wave run-up height is generally aspired in the design of dikes, which can be achieved by mortar-grouted riprap revetments (MGRR). Although MGRRs are widely utilized revetments along the German North Sea coast, no investigations into the wave run-up height on this revetment type are available to date. Full-scale hydraulic model tests were hence conducted to investigate wave run-up heights on partially grouted and fully grouted MGRRs. The wave run-up was determined using 2D-LIDAR measurements, which were validated by video data. Partially grouted MGRRs, due to their roughness, porosity, and permeability, reduce wave run-up heights from 21% to 28%, and fully grouted MGRRs due to their roughness reduce wave run-up heights from 12% to 14% compared to smooth impermeable revetments. Influence factors have been determined for four widely used revetment configurations, which can now be used for design purposes. A comparison and subsequent discussion about the representation of the physics of wave run-up by different parameters is carried out with the results presented.

Download Full-text

Design and Simulation of Scalable Plastering Machine Based on Virtual Prototyping Technology

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.721.691 ◽

2013 ◽

Vol 721 ◽

pp. 691-694 ◽

Cited By ~ 1

Author(s):

Zhen Li ◽

Xiao Jing Shang

Keyword(s):

Structural Design ◽

Theoretical Basis ◽

Virtual Prototyping ◽

Three Dimensional ◽

Solid Model ◽

Optimized Design ◽

The Future ◽

Virtual Prototyping Technology

Design a scalable plastering machine for the traditional plastering machine problems in the structural design. On the basis of the three-dimensional solid model established using PRO / E, we make the simulation for the institutions overall course of the campaign through using ADAMS, to detected design products by experience whether meet the actual requirements or not, but also provide a theoretical basis for the optimized design of wall plastering machine in the future.

Download Full-text

Wind and wave effects on surface currents in the Mediterranean Sea

10.5194/egusphere-egu2020-2607 ◽

2020 ◽

Author(s):

Verónica Morales Márquez ◽

Ismael Hernández Carrasco ◽

Vincent Rossi ◽

Alejandro Orfila

Keyword(s):

Mediterranean Sea ◽

Current Velocity ◽

Wave Interaction ◽

Surface Currents ◽

Mixing Properties ◽

Wave Effects ◽

The Mediterranean ◽

Transport And Mixing ◽

Lagrangian Motion ◽

Transported Material

The knowledge of Lagrangian motion is of a great importance due to their impact on the properties of transported material like the Essential Ocean Variables (phytoplankton, temperature, pCO2, etc), or other material like plastics debris, oil spill pollution, etc. In this study we analyze the influence of the wind and waves in the transport and mixing properties at the upper layers of the Mediterranean Sea. In this context, we propose a new approach for current velocity where we take into account the wind-wave interaction and the variability that it inserts into the current velocity through Ekman and Stokes components. Surface currents, Ekman, Stokes, Lyapunov exponent

Download Full-text

Incumbents will dominate Nigerian gubernatorial polls

Emerald Expert Briefings ◽

10.1108/oxan-db242403 ◽

2019 ◽

Keyword(s):

National Level ◽

Political Influence ◽

Content Type ◽

State Institutions ◽

The Future ◽

Electoral Cycles ◽

Election Results ◽

Run Up

Significance The results will indicate whether newly re-elected President Muhammadu Buhari’s All Progressives Congress (APC) will continue to dominate at the sub-national level and will give clues about the future of Nigerian politics once Buhari finishes his second and final term in 2023. Impacts The longstanding political influence of zonal power-brokers may grow more fragmented in subsequent electoral cycles. The run-up to the May 29 presidential inauguration could see a wave of court battles over election results. Further disputed polls will intensify fears about the APC’s willingness to unfairly manipulate state institutions to its advantage.

Download Full-text

Application of GIS in the Tourism Designing a Frame Work for Kerala Tourism

Atna Journal of Tourism Studies ◽

10.12727/ajts.5.1 ◽

2010 ◽

Vol 5 (1) ◽

pp. 1-13

Author(s):

Venugopal C K

Keyword(s):

Information System ◽

Geographic Information System ◽

International Market ◽

Geographic Information ◽

Full Potential ◽

Master Plan ◽

The Future ◽

Frame Work ◽

Basic Features ◽

Insight Into

Applications of Geographic Information System (GIS) are still in its infancy in the Kerala Tourism perspective. THE FUTURE OF KEALA Tourism lies in implementing a GIS based solution for its applications. Some basic features like itinerary planner and destination location finder have been implemented in the official website of Kerala Tourism. The full potential of GIS is yet to be realised. In order to compete in the international market this areas needs to be strengthened. This study gives in insight into the possible implementation of a GIS based solution in the master plan of Kerala Tourism. Also the possible outputs which such a system can generate are also examined.

Download Full-text