What time is slack tide? Just ask Britt.

Notice who carries the heavy frame and who carries the cable…girls kick ass. That’s Regina, Britt, CAR-E, and the wimpy guy in orange is Levi. AWAC deployed near the mouth of the inlet to get 24 hours of data to check phase lags between sea  surface  and slack tide (34.529434, -77.343110). However, Britt don’t need no stinkin’ AWACs. She predicted … Read More

New Bathymetry for the New River Inlet (thanks to Jesse & FRF crew)

A new bathymetry for the new river inlet has been posted on the new river inlet FRF web site.    Please go there for all the details.   A big thank you to Jesse McNinch and the entire FRF crew.      An gridded bathymetric image is shown below.  Note that there are two channels; the old one more to the north and the … Read More

Jenna, rope queen. You should see her on a quarter horse chasing a steer that needs to be branded. I suggest you not annoy her. 33 ADVs calibrated, 11 profilers calibrated, 5 combo-sensors calibrated tomorrow, 33 pressure gages getting bench tested for offsets, 19 profiler frames assembled (a lot of nuts and bolts, way a lot, and there are twice … Read More

Observations of the LARC surveying (from R.T. Guza)

The LARC continues to survey despite a 15-20 mph sea breeze.  They are on the other side of the inlet, and have surveyed a lot.  Waves on the ebb tide shoal are directionally beserk. Colliding crests with 90 degs (and more) spread.  Small crests, but they combine to make 3′ local peaks. 3-5 sec peak period.  Steep, savage little bastards … Read More

Real-time New River Inlet Wave and Weather Info (from R.T. Guza)

Real time New River wave info can be found at the CDIP web page or at http://cdip.ucsd.edu/ Click on “Recent” and scroll down to New River Inlet NC Buoy.  This buoy is in 130 m water depth, directly offshore of the New River Inlet.   It was just deployed so there are only a few days of data.   Detailed information is … Read More

Bill and kent on the road

Bill and Kent are driving from San Diego to New River Inlet, hauling boats and gear. From Bill: Here’s a typical situation, Kent with the wimpy automatic gas truck pulling a light load trying to hang with the power stroke diesel pulling a much heavier load.  He’s a good sport and a great traveling companion.

Delft3D dye simulations of New River Inlet (w. Ad Reniers & Patrick Rynne)

The youtube movie below shows Log10 dye concentration (no units) at New River Inlet released just up the inlet over t=2-4 hr.    This simulation is forced by the M2 tide and has no stratification, no wind, and no waves.  Top: time series of tidal elevation at (x,y)=(0,0) m.   The red dashed line represents the current time location.    Bottom:  plan … Read More

NEARCOM tidal analysis – delta t from high tide to water ebb (w. Matt Spydell)

In the previous post on Delft3d model output,  we showed in one of the panels, the time it takes from high tide until the water starts to ebb.    Notationally this could be written as t_{high tide} – t_{Uebb},  where t_{Uebb} is the time when the alongchannel tidal velocity switches to ebb (out of the inlet).     This time lag is related … Read More

Delft3D model tidal analysis (w. Ad Reniers & Patrick Rynne)

In order to understand how to time drifter and dye releases, I’ve become preoccupied with the New River Inlet tidal currents and the phase lag relative to the tide level (call this eta).   As is well known a standing wave has a 90 deg (pi/2) phase lag between eta and velocity and a progressive wave has a 0 deg lag.    … Read More