The 1964 Tsunami in Crescent City, California: A 40-Year Retrospective

Dengler, Lori; Magoon, Orville T.

doi:10.1061/40774(176)64

Cited by 12 publications

(4 citation statements)

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“…TA is defined here as the predicted tide relative to MHHW; in San Francisco it has a range of ∼2.2 m and exhibits a 4.4 year cycle associated with the perigean tide (Figure 2e). NTR at San Francisco shows values from ∼‐1.0 m (in 1964, as a result of a Tsunami triggered in Alaska (Dengler & Magoon, 2005)) to ∼0.75 m (Figure 2f), where high positive values are typically connected to extreme weather events including landfalling atmospheric rivers (e.g., Piecuch et al., 2022). Note that gaps in the TA and NTR components can arise due to insufficient hourly data (i.e., years with less than 75% completeness) to perform the tidal analysis; monthly and annual MSL values are often still available and hence the other components are not always affected.…”

Section: Resultsmentioning

confidence: 99%

Contributions of Different Sea‐Level Processes to High‐Tide Flooding Along the U.S. Coastline

Wahl

Barroso

et al. 2022

JGR Oceans

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Coastal communities across the United States (U.S.) are experiencing an increase in the frequency of high‐tide flooding (HTF). This increase is mainly due to sea‐level rise (SLR), but other factors such as intra‐ to inter‐annual mean sea level variability, tidal anomalies, and non‐tidal residuals also contribute to HTF events. Here we introduce a novel decomposition approach to develop and then analyze a new database of different sea‐level components. Those components represent processes that act on various timescales to contribute to HTF along the U.S. coastline. We find that the relative importance of components to HTF events strongly varies in space and time. Tidal anomalies contribute the most along the west and northeast coasts, where HTF events mostly occur in winter. Non‐tidal residuals are most important along the Gulf of Mexico and mid‐Atlantic coasts, where HTF events mostly occur in fall. We also quantify the minimum number of components that were required to cause HTF events in the past and how this number changed over time. The results highlight that at present, due to SLR, fewer components are needed to combine to push water levels above HTF thresholds, but tidal anomalies alone are still not sufficient to reach HTF thresholds in most locations. Finally, we explore how co‐variability between different components leads to compounding effects. In some places, positive correlation between sea‐level components leads to significantly more HTF events than would be expected if sea‐level components were uncorrelated, whereas in other places negative correlation leads to fewer HTF events.

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Section: Resultsmentioning

confidence: 99%

Contributions of Different Sea‐Level Processes to High‐Tide Flooding Along the U.S. Coastline

Wahl

Barroso

et al. 2022

JGR Oceans

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“…Our investigation did not include the effects of flooding in New Orleans since this was a result of levee failure, and not directly due to storm surge and wave action on the affected buildings. Similar postdisaster assessments are common after hurricane and tsunami events ͑FEMA 2006a; Dengler and Magoon 2005;Tezak and Rogers 2005;Saatcioglu et al 2005͒; however, the primary focus has normally been the performance of wood-framed residential structures. Subsequent to Hurricane Katrina, some assessment teams have included the response of engineered structures in their postevent surveys ͑FEMA 2006b; Mosqueda and Porter 2006;Douglass et al 2006͒.…”

Section: Generalmentioning

confidence: 85%

Lessons from Hurricane Katrina Storm Surge on Bridges and Buildings

Robertson

Riggs

Yim

et al. 2007

J. Waterway, Port, Coastal, Ocean Eng.

217

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The storm surge associated with Hurricane Katrina caused tremendous damage along the Gulf Coast in Louisiana, Mississippi, and Alabama. Similar damage was observed subsequent to the Indian Ocean tsunami of December 26, 2004. In order to gain a better understanding of the performance of engineered structures subjected to coastal inundation due to tsunami or hurricane storm surge, the writers surveyed damage to bridges, buildings, and other coastal infrastructure subsequent to Hurricane Katrina. Numerous lessons were learned from analysis of the observed damage, and these are reported herein. A number of structures experienced significant structural damage due to storm surge and wave action. Structural members submerged during the inundation were subjected to significant hydrostatic uplift forces due to buoyancy, enhanced by trapped air pockets, and to hydrodynamic uplift forces due to wave action. Any floating or mobile object in the nearshore/onshore areas can become floating debris, affecting structures in two ways: impact and water damming. Foundation soils and foundation systems are at risk from shear-and liquefaction-induced scour, unless designed appropriately.

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“…Trends in relative sea level can be assessed from the NOAA tide gauge at Crescent City, California (Station 9419750), which suggests steady decreasing sea levels of about −0.8 mm/yr (−8 cm/100 yr) since measurements began in 1933 (Montillet et al., 2018; National Research Council, 2012). The Pacific Rim setting also introduces the potential for tsunamis, the largest of which were associated with the 1700 Cascadia Mega Rupture, the 1964 Good Friday Earthquake, and the 2011 Tohoku Earthquake (Dengler & Magoon, 2005; Uslu et al., 2007; R. I. Wilson et al., 2013).…”

Section: Study Areamentioning

confidence: 99%