This is the first documented large earthquake in Venezuela. Reports are only scarce, but the little information available was compiled by Ardemand and Guzman (2017) describing an intensity of X in Cumaná and tsunami wave heights of 5-7, more than in any other known earthquake around Venezuela.
Magnitudes are only given as Ms (7.1-7.3), however Tanner and Shepherd (1997) also provide Mw8.0 for this event.
Combining both findings, either the tsunami waves have been amplified by submarine landslides or the earthquake was substantially larger than any other known shallow earthquake in the region.
Important findings from the analysis of Ardemand and Guzman (2017):
- It took place in midmorning (9-10am)
- Time between earthquake and tsunami was short (close to shore)
- Epicenter was close to Cumana (the only relevant settlement at the time)
- Complete destruction of the Cumana fort by shaking
- Inundation in Cumana (and another small settlement 11 km away)
- Tsunami run-up of 5-7 and some mangroves have been unrooted
- At least 4 deaths due to drowning
- Inundation as far as 500m inland (around Manzanares River delta and Caiguire hills)
Due to the high uncertainties and chance that this earthquake might have been bigger than the anticipated Ms7.3, it was added to this list.
|1530 Sep 01st, 14:30||1530 El Pilar Earthquake||Venezuela||7.3||C|
|Preferred Magnitude||7.30 (7.10-8.00)|
|Quality of Evidence||C|
|2017||Audemard and Guzman (2017)||7.3 (7.1-7.3)|
|2014||GHEA (GHEC v1.0)||7.3 (7.3-8)|
This table lists some of the most relevant publications in estimating the moment magnitude of this earthquake. If you think there are other important or new publications, please get in contact.