Chen reported in mid-July 2025 that Chinese geoscientists have publicly thanked NASA for sharing gravity field data from its GRACE satellites, which proved crucial in their deep-sea mining exploration efforts in the Indian Ocean.
The data, which revealed a gravity anomaly southeast of India, helped Chinese researchers pinpoint potential areas for mineral exploration. This data was openly available and used by the Chinese team to guide their research vessel, the Shiyan 6, on a 12,000 nautical mile voyage to investigate the area.
Here's a more detailed breakdown:
NASA's GRACE Satellites: The twin GRACE satellites, launched in 2002, were designed to map Earth's gravity field and monitor changes in mass distribution.
The Anomaly: The satellites detected a gravity anomaly (a spike in gravity readings) in the deep seabed southeast of India.
Chinese Response: Chinese geoscientists, recognizing the potential significance of this anomaly, decided to investigate further.
Shiyan 6 Expedition: In 2022, they deployed the Shiyan 6, a state-of-the-art research vessel, to the area indicated by the gravity data.
Public Acknowledgement: The Chinese research team, led by Mao Huabin of the South China Sea Institute of Oceanology, specifically thanked NASA for providing the gravitational field data, highlighting its importance in their deep-sea mining research.
Implications: This incident highlights the increasing interest in deep-sea mining for valuable resources and the potential for international scientific collaboration, even between nations with geopolitical tensions.
Deep-Sea Mining Concerns: Deep-sea mining raises environmental concerns due to the potential damage to fragile ecosystems and the disruption of marine life.
China's Growing Role: China is actively involved in deep-sea exploration and has been granted UN permits for exploration in the Indian Ocean and other seas, according to the Ocean Decade.
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