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Nisar

All articles tagged with #nisar

science19 days ago•4 min saved

Radar Eyes on a Sinking City: NISAR Maps Mexico City's Rapid Subsidence

NASA's NISAR radar mission maps Mexico City's ongoing subsidence, showing areas sinking more than 2 cm per month in what is among the fastest rates globally, including near the main airport. The sinking stems from decades of groundwater pumping from an ancient lake bed, causing soil compaction and stress on streets, pipes and monuments like the Angel of Independence. With the water table dropping about 40 cm per year and roughly 40% of water lost to leaks, stopping subsidence would require halting groundwater extraction, a difficult trade-off given the city’s water needs. NISAR’s real-time data offers crucial insight for planning and climate-water risk in a sprawling metropolis.

via The Guardian|

#groundwater #mexico-city #nisar

science19 days ago•6 min saved

NASA Map Reveals Uneven Sinking of Mexico City Up to 2 cm per Month

A NASA-ISRO satellite map shows Mexico City's subsidence is uneven, with some areas sinking more than 2 cm per month due to groundwater pumping and the city’s clay lake-bed substrate; preliminary data from Oct 2025–Jan 2026 highlight differential subsidence that threatens infrastructure and underscores the need for continued monitoring to guide policy and mitigation.

via WIRED|

#groundwater-pumping #mexico-city #nasa

space-exploration20 days ago•72 min saved

Satellite shows Mexico City's rapid ground subsidence

Mexico City is sinking at as much as 14 inches (35 cm) per year due to groundwater pumping and the weight of its sprawling urban area atop an ancient lakebed. NASA–ISRO’s NISAR satellite—a dual-frequency radar mission launched in 2025—now monitors surface changes with centimeter precision, revealing subsidence patterns across the city and demonstrating the mission’s capability to track ground movement globally.

via Space|

#mexico-city #nisar #remote-sensing

environment21 days ago•179 min saved

NASA radar shows Mexico City's rapid subsidence threatening water and infrastructure

Mexico City is sinking at up to about 0.8 inches per month (roughly 9.5 inches per year) due to over-pumping of its ancient aquifer. NASA’s NISAR radar maps reveal the pace of subsidence, accelerated by dense development on clay-rich soils, and the ground drop is fracturing roads and infrastructure while threatening the city’s water supply for about 22 million residents, raising concerns of a potential day zero if groundwater loss continues.

via CNN|

#aquifer #environment #mexico-city

science22 days ago•5 min saved

Space-Based View Confirms Mexico City's Rapid Sinking

NASA’s NISAR satellite, using data from Oct 2025–Jan 2026, shows Mexico City sinking at about 24 cm per year (with hotspots like the airport and Angel of Independence), driven by groundwater pumping on an ancient lake bed and threatening subway, drainage, and historic monuments; the findings provide a powerful, global example of subsidence and a basis for mitigation and alert systems.

via ScienceAlert|

#groundwater #mexico-city #nasa

science22 days ago•4 min saved

NASA satellite data reveal Mexico City's rapid subsidence near 10 inches annually

Mexico City is sinking about 9.5 inches per year, per NASA's NISAR data from Oct 2025 to Jan 2026, making it among the fastest-subsiding cities. The subsidence, driven by groundwater pumping and a lake-bed foundation, threatens the subway, drainage, water supply, and housing, with some areas down hundreds of feet over time. Scientists plan building-level maps to guide mitigation.

via New York Post|

#groundwater #mexico-city #nasa

world23 days ago•11 min saved

Mexico City's rapid subsidence mapped from orbit

NASA’s NISAR satellite measurements show Mexico City sinking unusually fast, with rates up to about 0.78 inches (2 cm) per month in areas like the airport and Angel of Independence, totaling roughly 9.5 inches (24 cm) per year and more than 12 meters across a century, highlighting a major geophysical challenge that space-based monitoring could help mitigate and guide adaptation.

via The Independent|

#earth #mexico-city #nasa

science24 days ago•6 min saved

NASA's NISAR Radar Tracks Century-Old Sinking in Mexico City

NASA’s new NISAR radar satellite has mapped ongoing subsidence in Mexico City, with some zones sinking more than 2 cm per month as the city sits on a drained lakebed. The readings from Oct 2025 to Jan 2026 demonstrate NISAR’s ability to measure ground deformation in dense, cloudy environments and are openly available, highlighting continued urban infrastructure risks and offering a global tool for monitoring subsidence.

via The Daily Galaxy|

#mexico-city #nasa #nisar

science26 days ago•4 min saved

NISAR Space Radar Reveals Mexico City's Ongoing Ground Subsidence

New data from NASA-ISRO's NISAR radar show parts of the Mexico City region sinking by a few centimeters per month (Oct 2025–Jan 2026) due to long-running groundwater pumping and compaction of an ancient lakebed; the subsidence has damaged infrastructure and landmarks, and NISAR’s all-weather, dual-band radar enables persistent monitoring of land motion in densely populated or vegetated regions.

via NASA (.gov)|

#groundwater #land-subsidence #mexico-city-subsidence

science1 month ago•9 min saved

EarthRise to Artemis II: NASA’s Evolving View of a Changing Earth

NASA marks Earth Day by recounting how Earth observation has advanced—from Apollo 8’s Earthrise to Artemis II’s Earthset—through radar and imaging missions like NISAR and INCUS, plus ongoing data from PACE and VIIRS, to monitor sea level rise, ice loss, weather, and urban growth and to inform agriculture, wildfires, droughts, floods, and other hazards.

via NASA Science (.gov)|

#artemis-ii #climate-change #earth-observation

science1 month ago•4 min saved

Cloud-Piercing NISAR Radar Maps Pacific Northwest

NASA-ISRO’s NISAR satellite captured cloud-covered imagery of the Pacific Northwest on Nov. 10, 2025 using L-band radar to see through clouds, highlighting Seattle, Portland, Mount Rainier, and Mount Saint Helens. With dual SAR instruments and a large 39-foot antenna, NISAR revisits areas roughly every 12 days to monitor changes in forests, wetlands, urban areas, and infrastructure, and to detect subtle ground movements associated with natural hazards such as volcanoes, earthquakes, landslides, and floods. The data aid resource management, hazard monitoring, and environmental decision‑making.

via NASA Jet Propulsion Laboratory (JPL) (.gov)|

#nasa-isro #nisar #pacific-northwest

science8 months ago•4 min saved

NASA-ISRO Satellite Captures First Radar Images of Earth's Surface

NASA and ISRO's joint NISAR satellite has captured its first detailed radar images of Earth's surface, demonstrating its capabilities in monitoring land and ice surfaces for applications like disaster response and environmental management, with full science operations expected later this year.

via NASA (.gov)|

#earth-observation #isro #nasa

science8 months ago•4 min saved

NASA-ISRO's NISAR Satellite Reveals Detailed Radar Images of Earth's Surface

via NASA Jet Propulsion Laboratory (JPL) (.gov)|

#earth-surface #isro #nasa

science-and-technology9 months ago•3 min saved

NASA-ISRO's NISAR Satellite Deploys Record-Breaking Radar Antenna in Orbit

A new satellite, NISAR, launched by NASA and ISRO, successfully deployed its record-breaking 39-foot antenna in orbit, enabling high-resolution 3D imaging of Earth's surface to monitor changes with unprecedented detail, with science operations expected to begin in late fall.

via Gizmodo|

#antenna-deployment #earth-monitoring #nasa-isro

science9 months ago•5 min saved

NASA-ISRO's New Radar Satellite Enhances Earth Monitoring and Space Science

The NISAR satellite, a collaboration between NASA and ISRO, successfully deployed its giant 39-foot radar antenna reflector in orbit, marking a significant milestone. This advanced radar system will monitor Earth's surface changes, aiding in disaster response, climate research, and ecosystem management, with the deployment enabling high-resolution imaging crucial for scientific and practical applications.

via NASA Jet Propulsion Laboratory (JPL) (.gov)|

#earth-observation #isro #nasa