About the Kōkeʻe Park Geophysical Observatory
Pacific Missile Range Facility and Kōkeʻe Park Geophysical Observatory Real Estate Environmental Impact Statement
Background
NASA’s Kōke‘e Park Geophysical Observatory (KPGO) is located on a remote ridge within Kōke‘e State Park. NASA operates the observatory to collect geodetic data that contributes to daily measurements of the Earth’s orientation in space and rotation. This data is used for scientific studies and a wide variety of positioning and navigation applications. For more information, visit https://space-geodesy.nasa.gov/NSGN/sites/KPGO/KPGO.html
About the Land Lease
NASA currently has leaseholds and easements of 23 acres of State of Hawaiʻi land for operation of KPGO. NASA issued the Navy a Use Permit in 2016 for portions of KPGO to conduct radar, telemetry, and communications services in support of PMRF operations.
NASA proposes to retain the use of 23 acres of state lands on Kaua‘i in support of continued operations including measurements of the Earth’s rotation and local land motion at KPGO.
NASA’s existing real estate agreements for state lands were established in 1965 and are set to expire in 2030.
Current Land Agreements - West Kaua‘i
The Navy use of these state lands is required to maintain technological and safety capabilities supporting PMRF training and testing. Navy training and testing operations do not occur on these state lands. The environmental effects of these training and testing operations are fully analyzed in previous, focused environmental documents referenced in Section 1.5 of the Draft EIS. It also ensures the continued conservation management by the Navy of natural and cultural resources on these lands.
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What is KPGO?
KPGO is one of the core sites for NASA’s Space Geodesy Project (SGP). The mission of KPGO is to collect geodetic data to support the geolocation of Earth observation from both land and space as well as scientific investigations of the Earth’s surface and interior.
Why is KPGO Important?
NASA and the scientific community use the data collected by KPGO to study ecosystems, water cycles, geological hazards, sea-level change, crustal-dynamics, and many other Earth science topics. NASA data products produced using KPGO are also used for spacecraft operations and for positioning, navigation, and timing services like the Global Positioning System (GPS). Many of these applications rely on the long history and continuity of the geodetic data collected from the current KPGO location.
Why Kōke‘e State Park?
KPGO is in Kōke‘e State Park at an elevation of 3,600 feet near the Waimea Canyon, isolated from radio broadcasts that would interfere with the sensitive scientific measurements made by the Very Long Baseline Interferometry (VLBI) system. The location on the island of Kaua‘i is also critical for tying the Hawaiian Islands into the International Terrestrial Reference Frame (ITRF) that contributes towards improving positioning and navigation accuracy on and around Hawai‘i.
What is the Space Geodesy Project at KPGO?
The SGP maintains a global network of space geodetic observing instruments. The network is comprised of sites around the world that use four primary observation techniques:
- Very Long Baseline Interferometry (VLBI)
- Satellite Laser Ranging
- Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS)
- Global Navigation Satellite System (GNSS)
The International Terrestrial Reference Frame (ITRF) is determined by the observations made from the instruments listed above and is the foundation for virtually all Earth observations and georeferenced data used by society. This data is fundamental for:
- Positioning and navigation in space/air and on land/sea
- Tracking sea level changes
- Tsunami early warning systems
- Volcano deformation measurements
- Predicting flood patterns
- Studying glacier dynamics