Monitor report: Çöpler gold mine, Erzincan (public operating mine)
Summary
7 usable periods of 8. Disturbed ground inside the site went from •••.• ha to •••.• ha; within 2 km outside from •••.• ha to •••.• ha.
Alerts
- HIGH · Disturbed ground outside the licence grew from •••.•• ha (2023-Q2) to •••.•• ha (2024-Q4)
Change over time
━ inside ━ within 2 km outside
| Period | Scene date | Valid area | Disturbed inside (ha) | Disturbed within 2 km outside (ha) | Water (ha) | Vegetation (NDVI, buffer) |
|---|---|---|---|---|---|---|
| 2023-Q1 | 2023-02-14 | 5% · low data quality, not used | — | — | — | — |
| 2023-Q2 | 2023-05-05 | 95% | •••.• | •••.• | ••.• | •.•• |
| 2023-Q3 | 2023-09-19 | 96% | •••.• | •••.• | ••.• | •.•• |
| 2023-Q4 | 2023-12-18 | 76% | •••.• | •••.• | •••.• | •.•• |
| 2024-Q1 | 2024-03-30 | 79% | •••.• | •••.• | •••.• | •.•• |
| 2024-Q2 | 2024-04-16 | 96% | •••.• | •••.• | ••.• | •.•• |
| 2024-Q3 | 2024-09-26 | 96% | •••.• | •,•••.• | ••.• | •.•• |
| 2024-Q4 | 2024-11-02 | 95% | •••.• | •••.• | ••.• | •.•• |
S2B_MSIL2A_20230214T082009_R121_T37SDD_20240816T003223 · S2B_MSIL2A_20230505T081609_R121_T37SDD_20230505T125910 · S2B_MSIL2A_20230919T080609_R078_T37SDD_20241031T145014 · S2B_MSIL2A_20231218T081249_R078_T37SDD_20231220T092744 · S2B_MSIL2A_20240330T081609_R121_T37SDD_20240330T115155 · S2B_MSIL2A_20240416T080609_R078_T37SDD_20240416T111834 · S2B_MSIL2A_20240926T081619_R121_T37SDD_20240926T112013 · S2B_MSIL2A_20241102T081009_R078_T37SDD_20241102T093844
Change map
Red: new disturbance between the first and last usable period. Blue: disturbance removed or recovered. The image covers the site and a 2 km buffer.
Method
- Pixel size (m): 20
- Buffer around the site (m): 2000
- Disturbed ground: BSI > 0.05 and NDVI < 0.15, excluding water, bare in every valid observation of up to 3 scenes from different months per period (persistence filter against seasonal farmland)
- Water: MNDWI > 0.1 or SCL water
- Maximum scene cloud cover (%): 20
What this report does and does not show
- Disturbed ground means bare, unvegetated surface that persists across scenes; it includes pits, dumps, pads, roads and some natural bare ground.
- Optical satellites cannot see slope stability or pad integrity. Ground deformation needs radar (InSAR), offered separately as a pilot.
- Periods with less than 60% valid (cloud- and snow-free) area are shown for transparency but not used for alerts.
- Areas are from 20 m pixels; small changes (under about 1 ha) are below what the method resolves.
- This is independent satellite evidence, not a regulatory inspection, environmental audit or geotechnical assessment.