Description1906 loma prieta.png	Comparison of seismograph data on the 1906 San Francisco Earthquake and the 1989 Loma Prieta Earthquake.
Date	1906 and 1989
Source	Seismographs at Gottingen, Germany. USGS plot on http://quake.wr.usgs.gov/info/1906/got_seismogram_lp.html
Author	Figures from a paper by David Wald and others
Permission (Reusing this file)	Public domainPublic domainfalsefalse This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy. Bahasa Indonesia ∙ català ∙ čeština ∙ Deutsch ∙ eesti ∙ English ∙ español ∙ français ∙ galego ∙ italiano ∙ Nederlands ∙ português ∙ polski ∙ sicilianu ∙ suomi ∙ Tiếng Việt ∙ Türkçe ∙ български ∙ македонски ∙ русский ∙ മലയാളം ∙ 한국어 ∙ 日本語 ∙ 中文 ∙ 中文（简体） ∙ 中文（繁體） ∙ العربية ∙ فارسی ∙ +/−

Also uploaded earlier to en:Wikipedia. (All user names refer to en.wikipedia)

• 2005-12-12 15:02 Zeizmic 733×549×3 (10409 bytes) USGS plot on http://quake.wr.usgs.gov/info/1906/got_seismogram_lp.html