Nationwide Post Event Survey and Analysis of the 2011 Tohoku Earthquake Tsunami

TLDR

Let's gather. Purpose: lines with Purpose label: one line: "[Purpose, Mechanism] Based on the survey dataset, the regional and local scale analyses were conducted to understand the basic characteristics of this event." So Purpose: "The study aimed to analyze regional and local characteristics of the 2011 Tohoku earthquake–tsunami using the survey dataset." That's one sentence. Mechanism: lines with Mechanism: three lines: first: "With the participation of about 300 researchers from throughout Japan, joint research groups conducted a tsunami survey along a 2,000 km stretch of the Japanese coast." second: "The inundation height and run-up height were surveyed by laser, GPS, and other instruments, and the tidal correction has been accurately adjusted using a tidal database and a numerical simulation for Tohoku, an area where tide gauges were destroyed by the tsunami." third: the Purpose line also has Mechanism: "Based on the survey dataset, the regional and local scale analyses were conducted to understand the basic characteristics of this event." So combine: "Joint research groups of ~300 scientists surveyed a 2,000‑km stretch of the Japanese coast using laser, GPS, and other instruments, applying tidal corrections from a database and numerical simulation, and then performed regional and local analyses of inundation and run‑up heights." That's one sentence. Findings: many lines: "More than 5,200 locations have been surveyed to date, generating the largest tsunami survey dataset in the world." "Maximum run‑up heights greater than 10 m are distributed along 500 km of coast in direct distance." "The affected area of this event was several times larger than historically recorded in Tohoku." "The mean inundation height in the southern Sanriku region is 10–15 m and there are several peaks of inundation along the coast from the northern to middle part of Sanriku." So combine: "The survey covered over 5,200 sites, producing the world’s largest tsunami dataset, revealing maximum run‑up heights above 10 m along 500 km of coast, an affected area several times larger than historically recorded, and mean inundation heights of 10–15 m in southern Sanriku with peaks along the coast." That's one sentence. Other: lines with Other: only one line: "[Findings, Other] The mean inundation height in the southern Sanriku region is 10–15 m and there are several peaks of inundation along the coast from the northern to middle part of Sanriku.Keywords: Tsunamipost event surveyinundation heightrun-up height This article is part of the following collections: Coastal Engineering Journal Citation and Reviewer Awards".

Abstract

AbstractAt 14:46 local time on March 11, 2011, a magnitude 9.0 earthquake occurred off the coast of northeast Japan. This earthquake generated a tsunami that struck Japan as well as various locations around the Pacific Ocean. With the participation of about 300 researchers from throughout Japan, joint research groups conducted a tsunami survey along a 2,000 km stretch of the Japanese coast. More than 5,200 locations have been surveyed to date, generating the largest tsunami survey dataset in the world. The inundation height and run-up height were surveyed by laser, GPS, and other instruments, and the tidal correction has been accurately adjusted using a tidal database and a numerical simulation for Tohoku, an area where tide gauges were destroyed by the tsunami. Based on the survey dataset, the regional and local scale analyses were conducted to understand the basic characteristics of this event. Maximum run-up heights greater than 10 m are distributed along 500 km of coast in direct distance. The affected area of this event was several times larger than historically recorded in Tohoku. The mean inundation height in the southern Sanriku region is 10–15 m and there are several peaks of inundation along the coast from the northern to middle part of Sanriku.Keywords: Tsunamipost event surveyinundation heightrun-up height This article is part of the following collections: Coastal Engineering Journal Citation and Reviewer Awards