黑蓝色区域的沉降速率可达每月超过 2 厘米，对城市层面的基础设施风险评估而言属高风险指标。文章估算，约有 2000 万人口处于此一下沉威胁之中，显示人群暴露规模极大。由于资料来自干季，NASA 能较明确描绘短期速率差异，降低部分季节性干扰，提高对快速变化（如地层压实与含水环境效应）之监测敏感度。
此外，地图中黄色与红色像素被标注为可能的背景讯号或量测杂讯，NASA 指出这些部分预期会逐渐减少，因此每月超过 2 厘米的深蓝区块更可能代表持续且更可靠的下沉热点。换言之，关键指标不是仅有单值，而是空间分布的高值聚集与时间序列趋势：高值区域比普通区域更可能需优先纳入灾害监测与基础设施治理。该结果可视为对地下沉陷进展的早期监测基线。
New data from NISAR, jointly developed by NASA and the Indian Space Research Organisation (ISRO), show that Mexico City is among the fastest sinking cities in the world. The analysis cited by author Fernanda González is based on preliminary satellite observations from October 2025 to January 2026 and indicates that subsidence is not uniform across the metropolis but spatially uneven. The mapped results show some zones with much faster ground movement than others, so the hazard is citywide rather than local.
Subsidence exceeding 2 centimeters per month appears in dark blue areas, a level that is a high-risk indicator for city infrastructure planning. The report estimates that about 20 million people are exposed to this sinking threat, indicating a very large exposure scale. Because the data are from the dry season, NASA can map short-term rate differences more clearly and reduce some seasonal interference, increasing sensitivity to rapid changes linked to soil compaction and moisture-related effects.
In addition, pixels in yellow and red are marked as possible background signals or measurement noise, with NASA noting these are expected to diminish over time, so areas above 2 centimeters per month are more likely to be persistent and reliable subsidence hotspots. In other words, the key signal is not only a single value but the spatial concentration of high values and their temporal trend: high-value clusters are more likely to require priority monitoring for hazard response and infrastructure management. This result can be treated as an early monitoring baseline for subsidence progression.