Could It Happen Here? The prospect of a tsunami in the north west Joshua Alcantara Maria Dougherty.

Slides:

Advertisements

Similar presentations

Agenda 2/10 Warm-Up: Have you ever seen geologic problems in California on the news? What types of events make life more challenging on the West Coast?

Advertisements

Initiation and propagation of submarine sediment failure 14 July 2009 Schlanger Fellowship presentation at USAC summer meeting Robert Viesca Advisor: Prof.

Near-Field Tsunamis in the POLA and the POLB Generated from Near-Shore Faults (M. Legg) Generated from Subaerial and Submarine Landslides (Synolakis, Borrero,

OCEANIC TOPOGRAPHY By Greg Schwab May 7, Competency 39 The teacher understands structure and function of the hydrosphere The teacher understands.

Instrumentation and Quantification of Tsunamis With an Emphasis on the Santa Barbara Channel.

Use the map to answer the question.

Section 19.4 – Earthquakes and Society

Earthquakes Presented you to by the Hazard Committee Madeline Galac Nicole Barstrom.

Earthquakes Movement & Destruction. What is an Earthquake? Shaking of the Earth produced by a sudden movement of rock beneath its surface.

EARTHQUAKE INDUCED LANDSLIDES: An assessment of Ness Castle- Arntully, St. Thomas, Jamaica Lyndon Brown, PhD Earthquake Unit, University of the West Indies,

Reading Material See class website “Sediments”, from “Oceanography” M.G. Gross, Prentice-Hall.

Copyright © by Isiorho1 Earthquake Slides By Dr. S. A. Isiorho.

Tsunami Preparedness Week

Dam Failure Dams are generally an expensive structure that directly affect the economy of the area through power generation, flood control and water supply.

China Earthquakes Tangshan, Overview Earthquake in China Tectonic overview - Causes of Earthquakes –Damage –Recovery.

Tsunamis Oceans 11. What is a tsunami? Tsunamis are defined as extremely large ocean waves triggered by underwater earthquakes, volcanic activities or.

Earthquakes. Given information on Earthquakes, you will be able to describe, in writing: a) what an earthquake is; b) what the elastic rebound theory.

Earthquakes. Describing Earthquakes Intensity vs. Magnitude.

Copyright © by Isiorho 1 Earthquake Slides Modified from the original version by Dr. S. A. Isiorho’s presentation.

Earthquakes Essential Question: How has earthquakes shaped our Earth?

NOTES. What are Earthquakes? A vibration of Earth’s crust caused by a sudden release of energy Caused by faulting or breaking of rocks Aftershocks – continued.

California’s Natural Hazards

SGES 1302 INTRODUCTION TO EARTH SYSTEM

CARIBBEAN STUDIES Hazards in the Caribbean. Earthquakes Earthquakes are caused by sudden release of slowly accumulated strain energy along a fault in.

Could It Happen Here? The prospect of a tsunami in the north west Joshua Alcantara Maria Dougherty.

Tsunamis Oceans 11. What is a tsunami? Tsunamis. are defined as extremely large ocean waves triggered by underwater earthquakes, volcanic activities or.

Earthquake Hazards.

Tsunamis By: Lauren & Morgyn 8B. Overview This powerpoint of tsunamis will include the following informational slides: Vocabulary (1&2) Concept Explination.

Earthquakes (Chapter 13). Lecture Outline What is an earthquake? Seismic waves Epicenter location Earthquake magnitude Tectonic setting Hazards.

General Science. What is an Earthquake?  Earthquakes are one of the most powerful natural forces  Shaking and vibration at the surface of the earth.

Earthquakes & Society –tsunami –seismic gap Objectives Discuss factors that affect the amount of damage done by an earthquake. Explain some of the factors.

Earthquakes happen where Earth's plates meet. Most earthquakes happen under the sea. Where the plates stick, pressure builds up and then the earth shakes.

Earthquakes Sudden movement of surface when accumulated strain along opposing sides of a fault is suddenly released. Rock stretches and snaps.

Click to edit Master text styles –Second level Third level –Fourth level »Fifth level Tsunami! What happened & why Grade 8; GLE 12

About 8000 years ago and the flooding of DoggerLand.

Mass Wasting Sculpturing Earth’s Landscape. What is Mass Wasting? The downslope movement of material under the influence of gravity May occur at rates.

Slope stability I EOSC316 Engineering Geoscience.

California Geologic Regions and Hazards Presentation DAY 2.

Xiaoming Wang and Philip L.-F. Liu Cornell University

Continental Margins and Ocean Basins. Continental Margins Three Main Divisions  Continental shelf  Continental slope  Continental rise.

Mass Movements SWBAT identify factors that affect mass movements; relate how mass movements affect people; analyze the relationship between gravity and.

Waves in the Ocean. Waves are the undulatory motion of a water surface. Parts of a wave are, Wave crest,Wave trough, Wave height (H), Wave Amplitude,

19.4 – Earthquakes & Society. Damages  Death and injuries  Collapse of buildings  Landslides  Fires  Explosions  Flood waters.

GEOHAZARDS. GEOHAZARD A geohazard is a geologic event that has the potential to both destroy property and cause a loss of life Landslide Earthquake Tsunami.

Tsunamis are caused by earthquakes, landslides, volcanic eruptions, or asteroid impacts. How tsunamis are caused.

TSUNAMI - A Tsunami, also known as a seismic sea wave, is a series of huge water waves that can cause great devastration and loss of life when they strike.

Damage from earthquakes The specification states that you need to know about: Social and economic impacts: Types of ground movement, damage to structures,

Environment | Medio Ambiente Natural Disasters hurricanes, tornadoes, tsunamis, volcano eruptions and earthquakes.

Chapter 8.  Earthquake - the vibration of the earth produced by a rapid release of energy. Focus is the point inside earth that starts the earthquake.

Tsunamis. BANDA ACEH, INDONESIA: June 23, 2004 A satellite image of the waterfront area of Aceh province's capital city before the tsunami.

© 2014 Pearson Education, Inc. W Waves and Water Dynamics Chapter 8 Tsunami and Wave Energy.

EARTHQUAKES & VOLCANOES. volcanoes Earth's volcanoes occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer.

KICK ‘EM JENNY GRENADA’S ACTIVE UNDERSEA VOLCANO Prepared by NEMO Secretariat Saint Lucia With material from the Seismic Research Centre of the University.

Tsunami : Evaluating the Hazard in Southern California.

Continental Margins. Most People’s Impression  Ocean is a big, bathtub-like basin.  Shallowest on edges, deepest in middle.  Not at all true!

Unit 5: Earthquakes Mr. Ross Brown.

Section 4: Earthquakes and Society

Jeopardy Vocab Water Glaciers and Wind Waves and Mass Wasting Misc.

Warm up 9/27/2016 ( 10 min) Label the diagram A-G Volcano B. trench

Earthquakes! Earthquakes!.

Section 4: Earthquakes and Society

Types of Mass Movement.

19.4 – Earthquakes & Society

Forces Within Earth Earthquakes are natural vibrations of the ground caused by movement along fractures in Earth’s crust, or sometimes, by volcanic eruptions.

E a r t h q u a k e s.

Forces Within Earth Earthquakes are natural vibrations of the ground caused by movement along fractures in Earth’s crust, or sometimes, by volcanic eruptions.

Chapter 19 – Earthquakes.

Ramtin Sabeti (1) and Mohammad Heidarzadeh (2)

Presentation transcript:

Could It Happen Here? The prospect of a tsunami in the north west Joshua Alcantara Maria Dougherty

Outline History of Previous Tsunamis. What causes a tsunami? Types of Tsunamis Why Southern California? Other information: –Economic effect of a Tsunami.

Area of possible tsunami in California

History Southern California has been free of damaging earthquakes for the past 200 years. However, moderate earthquakes have been increasing recently Unusual damaging waves have gather considerable attention. Papua New Guinea July 17, 1998 Also several locally generated tsunamis have been recorded. Santa Barbara December 1812 generated a tsunami effecting 60km (37.28 miles) of the coast.

What Causes a Tsunami? Earthquakes with magnitudes less than 7.0 have been known to cause tsunamis. Scientists hypothesis potential tsunamis in southern California may be caused by submarine landslides, or slope failure. Two basic types of submarine landslides. –Rupture Surface. (More likely to happen in California) –Displaced Mass of Material.

Rotational Slump Rupture surface cuts through a homogenous material Scoop shaped, concave upward Slope follows a circular arc.

Translational Slide Rupture surface is planar Failure result of a heterogeneous material –Bedding planes

Why California? Slopes offshore of Southern California have thick accumulations of under-consolidated sediment. Studies have shown significant sliding and slumping recently. especially in the Santa Barbra Channel. Therefore underwater slope failures are easily triggered by seismic activity due to the low shear strength of the sediments possibly giving give rise to a 20m tsunami. The deep basins, towering ranges, and canyons with steep walls that make up the southern California landscape can become immensely flooded

Calculating the cost of an inundation in Southern California caused by a tsunami Southern California Planning Model: a holistic approach to tsunami effects –A model that incorporates the economic loss through loss of labor, transportation, services SPCM 1 –Trip matrices SPCM 2 –The model calculates direct losses within a damage area and the economic effects of theses losses. –Transportation effects –Versus just calculating damage cost »ie replacing damaged or destroyed property.

Direct losses arise from lost opportunities to produce or, in the case of port damage, to ship. Indirect and induced losses arise as people and businesses in the damaged areas become unable to work or generate income as a result of the event. –Indirect losses are incurred by suppliers whose products and services are no longer purchased by damaged firms and households. –Induced losses are losses due to labor.