Sian Ka'an - Feb 10, 2007 update
Dive Team: Per, Sigurd & Mike
Surface support: Skybert from Norway
Dive site
Name: Yax Chen
Coordinate: WGS84 UTM 451245 2226084
Conditions: The water clarity in the Yax Chen basin was exceptionally clear. The water condition in the downstream part of the cave was fair. Flow was noticeable. The downstream is heading NE/E in parallel with the coast line. There’s a fair amount of organic particles in suspension throughout the water column.
Dive Objectives:
- Clean up dive. Remove safeties at 3k, 7k and Arizona.
- All went well.
- Marked lead in tannic dome between SW passage and first red clay restriction. SM # X4 Yaxchen 07
| Dive log: | |
| Dive # 1 | |
| Time in: | 11h10 |
| Time out: | 14h54 |
| Total run time: | 224 minutes |
| Max Depth: | 81 ft |
| Av Depth: | 48 ft |
| Divers: | Per, Sigurd & Mike |
Dive Team: Per & Sigurd
Surface support: Mike Lindsey
Dive site
Name: Yax Chen
Coordinate: WGS84 UTM 451245 2226084
Conditions: The water clarity in the Yax Chen basin was exceptionally clear. The water condition in the downstream part of the cave was fair. Flow was noticeable. The downstream is heading NE/E in parallel with the coast line. There’s a fair amount of organic particles in suspension throughout the water column.
Dive Objectives:
- Clean up dive. Remove safeties from downstream section.
- All went well.
| Dive log: | |
| Dive # 2 | |
| Time in: | 15h10 |
| Time out: | 15h45 |
| Total run time: | 95 minutes |
| Max Depth: | 40 ft |
| Av Depth: | 35 ft |
| Divers: | Per & Sigurd |
Dive Team: Fred & Chris
Surface support: Capitan Esteban
Dive site
Name: Entrada Boca Paila
Conditions: There was quite some flow at the entrance. The boil was clearly visible from the surface. North wind was blowing. Visibility in the cave was good.
Dive Objectives:
- Explore upstream lead at SM# 106
- This was interesting exploration through big cave running W/SW. The team explored 1,700ft of cave.
- The cave at the end of the line is wide open.
- There's many more leads to check closer to the entrance
- Silt sampling would need collecting.
Comments/observation: The flow is always existent. There’s no doubt that this is a big cave. The flow is coming from the SW. There’s a lot of percolation but less than Entrada Caapechen. Cave is white bellow layer of brown organic matters. There is big but sporadic speleothems. Halocline is at 40’ near the entrance.
| Line name: | Comple |
| Passage width (meters): | 5 |
| Passage Height (meters): | 12 |
| Passage Shape: | Canyons & Domes |
| Fauna: | Shrimp |
| Speleothems: | Yes |
| Sediment: | Organic - Cream and Brown |
| Infill: | Breakdown |
| Water: | Halocline near ceiling at 57 ft - |
| Additional Comments: | / |
Equipment and Survey: 3 x EAN 32 stages and 2 x 33amp scooter per diver
| Dive log: | |
| Dive # 3 | |
| Time in: | 12h00 |
| Time out: | 15h15 |
| Total run time: | 195 minutes |
| Max Depth: | 64 ft |
| Av Depth: | 50 ft |
| Divers: | Fred & Chris |