Wednesday, August 21, 2019

8/21-22/2019 - Data Logger Deployment

Laura and Marc went down to Wailea Bay at 0900 h on Wednesday (8/21/19) and deployed two salinity / temperature data loggers in about 2 m of water near living small Pm coral heads.  The data loggers are set to record salinity and temperature every 5 minutes.
Marc went down and deployed data loggers 3 and 4 at 1100-1130 h on 8/22/2019.  The water was much calmer and visibility better on 8/22.. surf was down to near 0'. 

Location of data loggers 1 and 2 deployed at Wailea Bay on 8/21/2019 at 0945-1045 and data loggers 3 and 4 deployed at Wailea Bay on 8/22/2019 at 1100 h and 1120 h..  Loggers programmed to record salinity and temperature every 5 minutes.


Data Logger 1:
Deployed at 0945 on 8/21/2019 in ~ 2 m of water attached to a dead Pm coral head on a large basalt rock
Salinity at deployment site = 35 ppt
Water Temperature at deployment site = 28 degree C
South swell running at occasional 3 foot
Water murky with fine sediment stirred up by wave action.
Data Logger 2:
Deployed at 1015 on 8/21/2019 in ~ 2.5 m of water attached to a dead Pm coral head on a large basalt rock
Salinity at deployment site = 35 pp
Temperature at deployment site = 28.5 degree C
South swell running at occasional 3 foot height
water murky with fine sediment stirred up by wave action.
Many of the young Pm coral showed signs of bleaching.
Data Logger 3:
Deployed at 1100 h on 8/22/19
Data logger Wailea 3 deployed at 1100h on 8/22/2019 in ~ 3 m of water attached to a dead Pm coral head on edge of basalt island
Salinity = 33 ppt
Temperature = 28.5 degree C
Water calm, visibility 10 m
Data Logger 4:
Data logger Wailea 4 deployed at 1120 h on 8/22/2019 in ~ 2 m of water attached to a dead Pm coral head
Salinity = 33 ppt
Temperature = 29.5 degree C
Water calm, visiblity 10 m
Images of data logger 1

Site 5:  19.980444°, -155.829568° - took water sample in 1.5 m of water - salinity = 32ppt, temp = 29.5 0at 1130 h , 8/22/2019.  Surface water temp = 29.5 0C (note: water was calm, 5 kt onshore wind and medium visibility (10 m).








Images of data logger 2




Images of Data Logger 3:








Images of Data Logger 4:







Number of people at beach along Wailea Bay between 1200-1215 h on 8/22/2019 (black numbers) and in the water swimming and snorkeling during the same time interval (red numbers).







Below are some images of Pm colonies taken on 8/21/19 on the north side of the bay approximately 15 to 30 meters off shore in shallow water (2-3 m).









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