Silfra
8 December, 2013
- Team Leader
- Siobhan White
- Number of Participants
- 5
- Total Debris Collected
- 0.146 kgs (measured)
64.255572, -21.116568
Survey Information
- Location Name
- Silfra
- Organization/Dive Centre
- Dive.is
- City
- Þingvellir National Park
- Country
- Iceland
- Date
- 8 December, 2013
- Survey Duration
- 48 Minutes
- GPS Coordinates
- Latitude: 64.255572
Longitude: -21.116568
- Weather Conditions
-
Temperature Range of 0 to -20. We had calm days and very windy (18m/sec sustained) days and a lot of snow fall.
- Survey Depth Range
- 1–10 meters
- Area Surveyed
- 6000 m2
- Dominant Substrate
- rock
- Ecosystem
- Lava and Basalt rock canyon (tectonic fresh water fissure) - I cannot work out from the list what that would fall under as an ecosystem catagory
- Wave Conditions
- Calm (glassy to rippled) for waves 0 – 0.1 meter high
Survey Photos
Debris Items Collected
| plastic materials collected | |
|---|---|
| Plastic Fragments | 1 |
| glass materials collected | |
|---|---|
| Cups & Plates-tableware/dishes (glass & Ceramic) | 1 |
| metal materials collected | |
|---|---|
| Wire, Wire Mesh & Barbed Wire | 8 |
| other materials collected | |
|---|---|
| Electrical Tape | 3 |
| Coins | 9 |
| Lead Shot Balls | 252 |
Additional Information
We know the lead shot came from divers pouches, as members of our staff have previously seen shot balls dropping from pouches.
Half a fine china cup
Lead shot
Comments and Feedback
We weren´t able to remove all the lead shot balls that we found, as we found that they were much harder to remove than expected as they had got themselves stuck in the natural holes in the lava rock. The two photos are before and after shots of one of the lead areas - we have removed a fair amount, but need to return with different tools. We were using needle-nose pliers, but need to return with either tweezers or some form of suction. Seeing as we use 7mm mittens, it is not very easy to operate anything with a small enough point to grab them. We removed as much as we could with the tools we had in the time we could manage to stay in 3 degree water but we fully intend to return and carry on.
