WEBVTT 00:21.409 --> 00:23.465 Hi everyone . My name is Mary Bryant 00:23.465 --> 00:25.687 and I'm a research hydraulic engineer . 00:25.687 --> 00:27.520 In this presentation , I will be 00:27.520 --> 00:29.409 talking about the near shore wave 00:29.409 --> 00:31.576 modeling technology . Wave watch three 00:31.576 --> 00:33.750 wave was three is a third generation 00:33.759 --> 00:35.400 spectral wave generation and 00:35.409 --> 00:37.680 propagation model for simulating wave 00:37.689 --> 00:39.909 growth transformation and decay 00:40.520 --> 00:42.631 originally developed on a rectilinear 00:42.631 --> 00:44.970 grid for deep water application . Wave 00:44.979 --> 00:46.701 wash three is undergoing rapid 00:46.701 --> 00:48.757 development to extend capability and 00:48.757 --> 00:50.979 applicability to the near shore via 00:50.990 --> 00:54.639 unstructured meshes . The purpose of 00:54.650 --> 00:56.539 near shore wave watch three is to 00:56.539 --> 00:58.428 estimate wind wave generation and 00:58.428 --> 01:00.372 transformation such as wave height 01:00.372 --> 01:03.159 period direction and spectral shape 01:03.209 --> 01:05.542 between the offshore and the near shore . 01:05.809 --> 01:07.920 An option for unstructured grids . An 01:07.920 --> 01:10.209 implicit solution provides wave watch 01:10.220 --> 01:11.942 three with the flexibility and 01:11.942 --> 01:14.349 efficiency to perform simulations at 01:14.360 --> 01:16.819 high resolution scales in shallow water 01:16.830 --> 01:18.970 while maintaining a coarse resolution 01:18.980 --> 01:21.110 in the deeper ocean . In the figure 01:21.120 --> 01:23.176 below , you can see that there is an 01:23.176 --> 01:25.176 unstructured mesh set up for Duck , 01:25.176 --> 01:27.342 North Carolina . The resolution varies 01:27.342 --> 01:31.069 from 500 m at the offshore to about 5 m 01:31.080 --> 01:35.029 in the surf zone like other near shore 01:35.040 --> 01:36.929 wave models . Common applications 01:36.929 --> 01:38.873 include transforming offshore wave 01:38.873 --> 01:41.096 information obtained from wave buoys or 01:41.096 --> 01:43.207 global original scale wave hind casts 01:43.209 --> 01:45.376 or forecasts to the near shore coastal 01:45.376 --> 01:47.290 area and simulating local wind 01:47.300 --> 01:49.319 generation in semi enclosed and 01:49.330 --> 01:51.980 enclosed water bodies due to wind . The 01:51.989 --> 01:54.360 multi scale flexibility provided by the 01:54.370 --> 01:56.370 unstructured grid me methodology of 01:56.370 --> 01:58.339 wave watch three is especially 01:58.349 --> 02:01.080 advantageous computationally compared 02:01.089 --> 02:03.256 to rectilinear models . When resolving 02:03.256 --> 02:05.550 complex shorelines or when grid nesting 02:05.559 --> 02:08.839 is required , the 02:08.850 --> 02:11.072 evaluation of near shore wave was three 02:11.072 --> 02:13.539 with observations is currently underway 02:13.750 --> 02:16.029 at the US Army Corps of Engineers field 02:16.039 --> 02:17.928 research facility in Duck , North 02:17.928 --> 02:21.190 Carolina and at Newport Oregon . Near 02:21.199 --> 02:23.366 shore wave information is required for 02:23.366 --> 02:25.199 the design of almost all coastal 02:25.199 --> 02:27.270 engineering projects . Wave drive 02:27.279 --> 02:29.501 sediment transport which is critical to 02:29.501 --> 02:31.723 coastal erosion and near shore currents 02:31.723 --> 02:33.835 which affect beach safety and coastal 02:33.835 --> 02:36.169 ecology . They induce wave set up and 02:36.179 --> 02:38.070 run up , they excite harbor 02:38.080 --> 02:40.136 oscillations which are important for 02:40.136 --> 02:42.160 port operations . They influence 02:42.169 --> 02:44.809 navigation and throughput and impact 02:44.820 --> 02:47.250 coastal structures . Estimation of 02:47.259 --> 02:49.550 waves is critical to assessing coastal 02:49.559 --> 02:53.520 flood risk . Wave was three is a 02:53.529 --> 02:55.585 community model that is available to 02:55.585 --> 02:57.918 the general public . The wave was three . 02:57.918 --> 02:59.973 Source code is maintained within the 02:59.973 --> 03:02.140 version control repository on github . 03:02.140 --> 03:04.307 I have provided a link to the guide to 03:04.307 --> 03:06.529 accessing and installing the wave watch 03:06.529 --> 03:09.410 three software . In addition , the wave 03:09.419 --> 03:11.160 watch software is compiled and 03:11.169 --> 03:13.169 maintained on several Department of 03:13.169 --> 03:15.058 Defense high-performance computer 03:15.058 --> 03:18.710 systems for USA use both the wave wash 03:18.789 --> 03:20.733 remodeling software executable and 03:20.733 --> 03:23.750 Gooey for model setup , execution and 03:23.759 --> 03:26.210 visualization will soon be available 03:26.220 --> 03:28.109 within the aqua veo surface water 03:28.109 --> 03:30.589 modeling system . The full version of S 03:30.600 --> 03:32.990 MS is available for download from the 03:33.029 --> 03:35.229 Acid App portal for USA users . 03:37.160 --> 03:39.619 I've also provided here . Some links to 03:39.630 --> 03:41.779 help for wave was three documentation 03:42.050 --> 03:44.050 including the wave was three github 03:44.050 --> 03:46.050 community website for new users and 03:46.050 --> 03:48.720 developers . A link to the user guide , 03:48.880 --> 03:51.039 the developer portal and the current 03:51.050 --> 03:54.779 wave was three manual er 03:56.020 --> 03:58.970 discovering , developing and delivering 03:58.979 --> 04:01.035 new ways to make the world safer and 04:01.035 --> 04:02.550 better every day .