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NOAA NCTR research product Not an official forecast

Iquique, Chile Tsunami, April 1, 2014
Main Event Page

Iquique, Chile Event Page | Model and Data Comparison Plots

The Chile tsunami was generated by a Mw 8.2 earthquake (19.642°S 70.817°W), 2014-04-01 23:46:46 UTC, 95km (59mi) NW of Iquique, Chile (according to the USGS). The tsunami was detected and measured at the first DART (Chilean) about half an hour after the earthquake. Forecast results shown below were created with the NOAA forecast method using MOST model with the tsunami source inferred from tsunameter/DART® data.
		The graphics display research forecast results, showing qualitative and quantitative information about the tsunami, including tsunami wave interaction with ocean floor bathymetric features, and neighboring coastlines. Tsunami model amplitude information is shown color-coded according to the scale bar. Offshore tsunami wave amplitude was estimated based on actual tsunami observations at DARTs 32401 and 32402 and was not based on any particular earthquake mechanism. Modeling Results Model amplitudes calculated with the MOST forecast model. Filled colors show maximum computed tsunami amplitude in cm during 24 hours of wave propagation. Maximum wave amplitude with travel time contours Maximum wave amplitude showing bottom bathymetry Propagation animation showing model-data time series comparisons (.mov) Propagation animation on YouTube | small animation (.mov) | larger animation (.mov)

Model and DART® buoy data/ tide gauge sea level data comparisons

Comparison of the April 1, 2014 Chile tsunami recorded at tsunameter/DARTs and tide gauges with model results. The DART model time series are obtained from the pre-computed generation/propagation forecast database in real time, after fitting models to tsunami records from the DARTs.

• DART® comparisons with model data
  • Composite plot
• Tide Gauge comparisons with model data
  • Composite plots
    • Alaska region
    • Hawaii region
    • US West Coast region
    • Japan
  • Individual regional tide gauge comparisons
    • Arica, Chile
    • Iquique, Chile
  • Additional inidividual tide gauge comparisons
    • Hilo, HI
    • Honolulu, HI
    • Kahului, HI
    • Los Angeles, CA
    • Crescent City, CA
• Unit Sources: 1.35*cs71a + 3.46*cs72a

Disclaimer: The forecasts on these pages show the results of ongoing research to enhance tsunami science and to improve NOAA operational tsunami forecasts. These products were developed during or shortly after the tsunami event, are intended for research use, and are not an official forecast. They should not be used as the basis of any public or private policy decisions. Please contact NCTR to find if there are more detailed follow-on analysis results.

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