Table 1 Key techniques for sampling deep sea sediments
From: Review and Analysis of Key Techniques in Marine Sediment Sampling
Samplers | Performances parameters | Sealing techniques | Pressure-retaining techniques | Temperature-retaining techniques | Low disturbance techniques | No pressure-drop transfer technique (Yes/No) | ||
|---|---|---|---|---|---|---|---|---|
Core length (m) | Core diameter (mm) | working pressure (MPa) | ||||||
DSDP-PCB | 6 | 57.8 | 35 | Steel-on-steel and valve | PRT | N/A | DLTS,STST | No |
ODP-PCS | 1 | 42 | 70 | Steel-on-steel and valve | PRT | N/A | DLTS, Gap between the DLTS | Yes |
FPC | 1 | 58 | 25 | Piston and flap | PRT | PTRT | DLTS, Piston structure | No |
HRC | 1 | 50 | 25 | Piston and flap | PRT | PTRT | DLTS, Piston structure | No |
PTCS | 3 | 66 | 30 | Steel-on-steel and valve | PRT | ATRT | DLTS, STST | No |
Hybrid PCS | 3.5 | 51 | 35 | Steel-on-steel and valve | PRT | PTRT | DLTS, STST | No |
MAC | 0.55 | 100 | 14 | Piston and flap | PPRT | PTRT | Piston structure, Special cutter, Core catcher | No |
DAPC | 2.5 | 84 | 20 | Piston and ball valve | PPRT | PTRT | Piston structure, Special cutter, Core catcher | No |
HPTC | 3.5 | 54 | 35 | Double ball valve | PRT | PTRT | Special cutter, Rotary sampling, Core catcher | No |
MDP | 1.3 | 45 | 20 | Steel-on-steel and flap | PRT | N/A | Special cutter, Core catcher | No |
TRC | 0.5 | 48.5 | 60 | Double ball valve | PPRT | N/A | DLTS, Diamond drilling tool | No |
PIC | 12 | 65 | 30 | Piston and flap | PPRT | N/A | Special cutter | No |
MHPIC | 0.29 | 69 | 70 | Steel-on-steel and flap | PPRT | PTRT | Special cutter | No |
HPTP | 11.2 | 104 | 30 | Steel-on-steel and flap | PPRT | PTRT | DLTS, BHA | No |
PRMSC | 0.073 | 300 | 60 | Double ball valve | APRT | PTRT | Piston structure, Special cutter | No |
HBFC | 0.052 | 100 | 30 | Double ball valve | PRT | PTRT | DLTS, BHA | No |
IVBP | N/A | N/A | N/A | Ice seal | PRT | ATRT | DLTS, BHA | No |