Sea-Floor Sunday #58: Northern Puerto Rican margin
One of my more popular posts, based on site stats, is this one highlighting a nice image of the seafloor in the region of the Puerto Rico trench. This week’s Sea-Floor Sunday image shows a new bathymetric image of this region that I found on the USGS Woods Hole Science Center website.
Shaded relief and colored bathymetry of the Puerto Rico Trench (credit: http://woodshole.er.usgs.gov/project-pages/caribbean/seafloor.html)
Click on the image above (or here) to read the description from the researchers who acquired the data.
Below is another image from this dataset — this one is zoomed in a bit and also reoriented (north is to the lower right).
Perspective view of part of Puerto Rico Trench (credit: http://woodshole.er.usgs.gov/project-pages/caribbean/tsunamiFig.html)
Click on the image to go to the page that describes the features shown here and a key to the annotation. The ‘amphitheaters’ refer to areas of geologically recent submarine landslides (note the possible debris fans at the base of slope; one of them outlined with a black dashed line).
Clastic Detritus 
Woow, nice. Funny to see such network of rectilinear gullies from the carbonate shelf, as well as the structural evolution alongstrike. Awesome data.
Is there any correlation between the Mayon volcanic eruption and the puero rico trench multiple earthquakes? Coincidentally the volcano has clogged and there have not been any earthquakes reported in the puerto rico trench and surrounding islands since 12/26/09.
Is there any correlation between the Mayon volcanic eruption and the puerto rico trench multiple earthquakes? Coincidentally the volcano has clogged and there have not been any earthquakes reported in the puerto rico trench and surrounding islands since 12/26/09.
Faith, I’m not sure about the volcanic or seismic activity in this region. I recommend checking out the ‘Eruptions’ blog — the author is pretty good about answering reader questions about specific volcanoes: http://scienceblogs.com/eruptions/