Assessment of seismic hazards for Hurghada, Red Sea, Egypt

Hamouda, Amr Z.

doi:10.1007/s11069-011-9767-y

Cited by 9 publications

(6 citation statements)

References 26 publications

(29 reference statements)

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“…The earthquake record chosen to act as the seismic load was the 1940 El Centro earthquake that happened in California, USA with perceived intensity of X on the Mercalli intensity scale (Wikimedia Foundation, Inc. 2016). The earthquake signal was scaled to match the peak ground acceleration of Hurghada that was found to be 0.29 g (Hamouda 2011). …”

Section: Time History Analysismentioning

confidence: 99%

“…This zone has been known as a range of significant moderate extent seismic action. It has different sources of earthquakes occur at the northern Red Sea and its two branches Gulf of Suez and Gulf of Aqaba (Hamouda 2011). The latest maximum earthquake magnitude (Local Magnitude ML = 6.8) was experienced on March 31, 1969.…”

Section: Introductionmentioning

confidence: 99%

“…The latest maximum earthquake magnitude (Local Magnitude ML = 6.8) was experienced on March 31, 1969. It was situated at 20 km (NE direction) from Hurghada city (Hamouda 2011).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design and Structural Dynamic Characteristics of an Irregular Staircase Under Earthquake Loading

Magdy

Khalil

Mohamed

et al. 2017

Facing the Challenges in Structural Engineering

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Abstract. Reinforced concrete staircases are structurally designed as cantilevered, slab type or beam-slab type. Within this study an irregular cantilevered staircase is studied and its structural dynamic characteristics are explored. An eigen-value modal analysis is performed to determine the mode shapes, their corresponding modal participation factors and natural periods of vibration. The highest modes of interest are identified. Following on that, a scaled record of a previous historical earthquake was applied within a direct integration time-history analysis in order to assess the performance of that irregular stair case under earthquake loading. That load was applied within two perpendicular load cases representing the different possible directions of earthquake vibrations in which the effect of the structure irregularity was assessed per direction. The structure was found to have large drifts creating a need to change the structural system.

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Section: Time History Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design and Structural Dynamic Characteristics of an Irregular Staircase Under Earthquake Loading

Magdy

Khalil

Mohamed

et al. 2017

Facing the Challenges in Structural Engineering

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“…PSHA studies in such regions are challenging owing to the paucity and incompleteness of data, particularly when local stations are lacking. However, seismic-hazard assessment has become increasingly important in the context of sustainable development (Kracke and Heinrich, 2004;Hamouda, 2011;Goda et al, 2013;Lam et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Probabilistic Seismic‐Hazard Assessment for Eritrea

Goitom¹,

Werner²,

Goda³

et al. 2017

Bulletin of the Seismological Society of America

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To date little is known about seismic hazard in Eritrea, despite its location in a volcanically and tectonically active region, and the gathering pace of major infrastructure projects. In response, we report the findings of a comprehensive probabilistic seismic-hazard assessment for Eritrea and adjacent areas. Seismic source and groundmotion models are constructed separately; we use an adaptive spatiotemporal smoothing method to map expected patterns of seismicity. To construct a consistent earthquake catalog from different data sets, we use orthogonal regression to convert and unify different magnitude scales. A sensitivity analysis of the different input parameters helps constrain them and disaggregation of site-specific hazard estimates yields insights into the relative contribution from seismic sources of different magnitudes and distances. The results highlight seismic hazard in proximity to the Red Sea, Gulf of Aden, Afar depression, and along the boundaries of the Danakil microplate. We estimate a 10% chance over 50 years of observing pseudospectral accelerations (PSAs) at 0.2 s exceeding 0:16g in the port city of Massawa (population ∼32;000) and the town of Bada (population ∼4000). For the capital, Asmara (population ∼520;000), we calculate a PSA of 0:11g at 0.2 s. Compared with previous studies, our results provide greater spatial resolution, use more recent ground-motion models, and benefit from a smoothed seismicity method. Our aims are to stimulate further studies and contribute to the safe development of the region in light of its exposure to seismic hazards.

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“…The idea is that a change in sediment composition will result in a change in acoustic properties [10,11].…”

Section: Introductionmentioning

confidence: 99%

Seafloor Characterization and Backscatter Variability of Coral Reef by Different Acoustic Techniques, El-Gouna, Red Sea, Egypt

El-Gharabawy¹,

Ma²,

Hamouda³

2017

J Oceanogr Mar Res

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Seabed sediment classification is an important research study for marine geology, marine environment and other research areas. The study area located at 25 km North of Hurghada. This study aims at identification of sea bed sediments and coral reef habitat of El-Gouna Area. Side scan sonar and QTC system used for surveying the area. Detection of the destroyed coral reef areas depends on the acoustic backscatter and diving survey along the study area. The sea floor sediment types, features and the biological habitats were the main causes that control the acoustic signature in the study area. The main seabed sediment types in the study area were hard bottom representing the coral reef patches, coarse and fine sand fractions. Overall, the acoustic approach showed consistent results for the assessment and mapping of the benthic habitats in this shallow-water area. Three different acoustic patterns were recognized: pattern of strong backscatter related to coarse sand, while Pattern of weak backscatter confined to silt and fine sand, patches of strong and weak backscatter are Patterns with isolated reflections belong to hard and soft coral reefs.

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Assessment of seismic hazards for Hurghada, Red Sea, Egypt

Cited by 9 publications

References 26 publications

Design and Structural Dynamic Characteristics of an Irregular Staircase Under Earthquake Loading

Design and Structural Dynamic Characteristics of an Irregular Staircase Under Earthquake Loading

Probabilistic Seismic‐Hazard Assessment for Eritrea

Seafloor Characterization and Backscatter Variability of Coral Reef by Different Acoustic Techniques, El-Gouna, Red Sea, Egypt

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