Code system developed, increased at sinkhole site
BAYOU CORNE- More land fell into the growing sinkhole in Assumption Parish, and leaders think movement at the site will continue in the near future.
According to a blog, updated regularly by parish leaders, the sinkhole "burped" and expanded Thursday morning. Water in the hole is moving, "an indication that the event is not over," a post read on the blog.
Leaders have also developed a code system, used to clarify events around the site.
Code 1: Minimal to no seismic activity around/below sinkhole; 10 or fewer of the sharp seismic signals associated with rock movement, called mini-earthquakes (MEQs) or the longer signals associated with gas or liquid movement, called Very Long Periods (VLPs) within 24-hour period; allows work on sinkhole and inside berm area to continue
Code 2: Restricts work directly on the sinkhole, indicates some increased seismic activity around/below sinkhole but not at a level that indicates imminent threat of sloughing or movement below sinkhole (10 to 50 MEQs or VLPs in 24 hours)
Code 3: Restricts all work inside the containment berm, indicates seismic activity has elevated to a point similar to what has been seen in past monitoring prior to a sloughing on the shore or movement beneath sinkhole (More than 50 MEQs or VLPs in 24 hours)
Thursday, the Bayou Corne area was at Code 3.
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