This Special Event web page is intended to provide direct links to and images of
data and materials available from IRIS programs and preliminary research results
from the seismology community. We welcome any additional contributions that might
be of interest to the research community. Please
send them to the email address listed below.
IRIS does not necessarily endorse the views or scientific validity of the posted items.
Harvey went from a tropical depression to a major hurricane and intensified rapidly to a category 4 hurricane with winds up to 130 mph. It made a landfall on August 25, 2017 at about 22:00 local time (August 26, 2017 3:00 UTC) near Rockport, Texas.
The records for one of the Kawlake array sites is shown here.
All 3 components show a large 5s wave, which is largest when Harvey is in
shallow water, (see fig. 2). The data was recorded on Sigma 4 recorders from
the Seismic Source Company in Ponca City, OK. The 3 components (Z, H1, H2)
time series for 10 minute records with 2ms sampling and their respective
amplitude spectra are displayed in figures 3, 4, and 5.