447 Constantinople earthquake

{{Short description|Earthquake in present-day Turkey}}

{{Infobox earthquake

| name = 447 Constantinople earthquake

| image =

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| map_caption =

| pushpin_map =

| map2 = {{Location map | Turkey Marmara|relief=1

| label=

| lat=41.008

| long=28.978

| mark=Bullseye1.png

| marksize=40

| position=top

| width= 260

| float=right

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| pre-1900 = yes

| timestamp =

| isc-event =

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| local-date = 26 January, 6 November, 8 November or 8 December 447

| local-time = Night

| duration =

| magnitude = 6.4 {{M|?|link=y}}

| depth =

| location = {{coord|41.008|28.978|region:XX_type:event|display=inline,title}}

| fault =

| type =

| affected = Bithynia, Thrace, Byzantine Empire

| damages =

| intensity = {{MMI|IX}}

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| pgv =

| tsunami = yes{{Cite journal |last1=Ambraseys |first1=N.N. |last2=Finkel |first2=C.F. |year=1991 |title=Long-term seismicity of Istanbul and of the Marmara Sea region |journal=Terra Nova |volume=3 |issue=5 |pages=527–539 |doi=10.1111/j.1365-3121.1991.tb00188.x|bibcode=1991TeNov...3..527A }}{{Citation |last=National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information. |title=Tsunami Event Information |year=1972 |publisher=NOAA National Centers for Environmental Information |url=https://www.ngdc.noaa.gov/hazel/view/hazards/tsunami/event-more-info/41 |access-date=8 November 2020 |doi=10.7289/V5TD9V7K}}

| landslide =

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}}

The area around Constantinople was affected by a major earthquake in AD 447. It caused serious damage to the recently completed Theodosian walls in Constantinople, destroying 57 towers and large stretches of the walls. The historical records contain no mention of casualties directly associated with this earthquake, although many thousands of people were reported to have died in the aftermath due to starvation and a "noxious smell".{{Cite web |last1=Guidoboni |first1=E. |last2=Ferrari |first2=G. |last3=Mariotti |first3=D. |last4=Comastri |first4=A. |last5=Tarabusi |first5=G. |last6=Sgatoni |first6=G. |last7=Valensise |first7=G. |title=Catalogue of Strong Earthquakes in Italy (461 BC – 1997) and Mediterranean Area (760 B.C. – 1500) |url=http://storing.ingv.it/cfti/cfti5/quake.php?M1180IT |publisher=INGV-SGA}}