Waialea Bay- video and images of the reef (11/17/20

 11/17/20

While we were retrieving the data loggers we took some pictures and videos of the reef as we were swimming between logger stations.

The reef appears pretty much the same as it did prior to the shut-down resulting from Covid19.  

href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj03TQ2nFZECFjqytbA9L9rj3z4Wc0riR8nYvD9qbVuDxhV8fyDW-7eBWUxRaYfVtTJQ_rrM59fWYDfd7wfau8sYVR1AmrqzwGNzhPiaGTOReAyDgEheVIlfroMbKrP-n6bXBSt17GK3GvA/s2048/MICR1807.jpg" style="margin-left: 1em; margin-right: 1em;">

 Tuesday, November 17, 2020

Temperature and Salinity for Stations 1 and 3 (9/7/20 to 11/17/20)

11/18/2020

Data loggers (salinity and temperature) were retrieved from stations 1 and 3.  Data from the loggers is shown below in Figures 1 and 2.  Hobo temperature loggers were put out at stations 1, 2 and 3 (Figure 3).

Data book entry for 11/17/20 data logger swap at stations 1,2 and 3.

Figure 1 Salinity (ppt) and Temperature (C) data from Data logger at Station #1.

Subset statistics for Station #1.

Figure 2. Salinity and Temperature data from data logger at station 3.

Subset statistics for Station #3.

Figure 3. Location of data loggers 1, 2, 3 and 4 deployed at Wailea Bay (2 and 4
no longer have loggers in place. 

Temperature and Salinity for Stations 1 and 3 (5/13 to 9/9/2020)

9/13/2020

Data loggers were retrieved from stations 1 and 3 on 9/13.  They were downloaded and replaced.  Station 2 (temperature / salinity) data logger was missing and has not been found.  

We have decided to replace the Temp/Salinity loggers with temperature loggers.

Location of data loggers 1, 2, 3 and 4 deployed at Wailea Bay (2 and 4
no longer have loggers in place. 

Figure 1.  Temperature profile for Station 1, Waialea Bay from 5/13/2020 until 9/9/2020.

Figure 2.  The series statistics for the temperature profile in Figure 1 above.

Figure 3.  Temperature and salinity profiles for station 3 at Waialea Bay from 5/16/2020 to 9/5/2020.

Figure 4.  Salinity series statistics for salinity profile in 
 Figure 3.

Figure 5.  Temperature series statistics for temperature profile in Figure 3.

Waialea Bay Data Download on 5/13/2020

5/13/2020

Laura Jim, Sihkea Jim and Marc Rice went down to Waialea Bay this morning to retrieve and replace the Temperature / Salinity Hobo data loggers.  The weather was sunny and calm with a 2' swell coming in occasionally.  The water was somewhat turbid with visability running around 20'.  We were able to locate and remove all three data loggers from their cases.  The data loggers were taken back to the car, data was downloaded and the loggers were cleared and restarted.  They were then placed back in their carriers at the three offshore stations.  Data was obtained from stations 1 and 2 but the data logger at station 3 would not "wake up" so we did not get that data (if there is any) downloaded.
Below are the data sets for stations 1 and 2 with the temp and salinity statistics in the lower right of each figure.

Figure 1.  Temperature and salinity measurements at Station 1 for the period from 2/24/2020 to 5/13/2020.

Figure 2.  Temperature and salinity measurements at Station 2 for the period from 2/24/2020 to 5/13/2020.

Some images from todays data logger retrieval work today.  

 Confusing messages from the State!  Waialea is both open and closed!

The north side of Waialea Bay where station 1 is located.

Opening the logger carrying case and retrieving the data logger for data download.

Laura and Sihkea on the surface at station 1.

Laura retrieves the data logger from station 3.

Data logger from station 3.

Recording the serial number of the data logger from station 3.

All finished... data loggers retrieved, downloaded and replaced.

While the data downloads were occurring Laura Jim took pictures of the small Pocillopora sp. colonies that she found in the vicinity of stations 3.  They don't look great but they are surviving.

Temperature and Salinity Data From Waialea Bay (12/16/2019 to 2/23/2020)

Data from data loggers at stations 1, 2 and 3.

2/23/2020  Download

Stations 1- Temperature Logger

File “20662841_1station1.hobo”

GPAC Presentation

11/11/2019

11/11/2019 PDF of Presentation

On Monday night, Dr. Craig Downs came to HPA to present information about over tourism, sunscreen pollution and ways of handling both.  Presenting to a crowd of approximately 100 people, he showed slides of areas in Indonesia, the Caribbean and Hawaii where the effect of over crowded tourist areas and the use of sunscreen have "killed" the coral reef.  Stressing that the coral reef is a valuable economic entity, he further outlined how many for profit businesses (tour companies, hotels, etc.) are realizing that they will not have a business if the coral reefs disappear.
The remedy for the chemical pollution via sunscreens is to use"reef safe" sun screens or, better yet, wear UV protective clothing in place of any type of sunscreen.  The only way that was shown to remediate the over tourism (too many people at one place) problem is to close the area.  This type of solution simply sends the people to some other place where it is overrun.  The only answer to too many people is fewer people... population limitations - but no one seems to want to talk about that.

The talk was very well received and there were many questions at the conclusion of the presentation.

Below are a couple of pictures from the night's presentation.

Dr. Downs poses with Laura Jim's Capstone Students.

Talking about the effect of oxybenzone and other chemical pollutants of coral development and growth.

The presentation by Dr. Downs was attended by approximately 100 people.

Gerry Clark Art Center.