Paleomagnetic secular variation curve for the past two thousand years. Label dates are mean ages before present (B.P.) or Anno Domini (AD), with gray circles indicating estimated error. Note that the magnetic field changes in declination (horizontal arched lines) and inclination (angled vertical lines) over time.
Images
![chart showing paleomagnetic secular variation curve](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/PaleomagCurve.png?itok=zpKihll8)
Paleomagnetic secular variation curve for the past two thousand years. Label dates are mean ages before present (B.P.) or Anno Domini (AD), with gray circles indicating estimated error. Note that the magnetic field changes in declination (horizontal arched lines) and inclination (angled vertical lines) over time.
Building addition floor preparation that would later serve as the archive. EROS History Project
Building addition floor preparation that would later serve as the archive. EROS History Project
Media used at EROS including high density tapes (HDT), computer compatible tapes (CCT), and digital cassette tapes (DCT). EROS History Project
Media used at EROS including high density tapes (HDT), computer compatible tapes (CCT), and digital cassette tapes (DCT). EROS History Project
![Mount Konocti viewed from Cinder Cone, Clear Lake Volcanic Field.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/MtK%20from%20cinder%20cone%2C%20view%20W.jpg?itok=-w54NZrw)
Mount Konocti, the most distinct volcanic feature of the Clear Lake Volcanics as viewed to the west from Cinder Cone.
Mount Konocti, the most distinct volcanic feature of the Clear Lake Volcanics as viewed to the west from Cinder Cone.
![Lahars pick up material as they travel, which can cause damage to s...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img3289.jpg?itok=8zVESSlp)
Lahars pick up material as they travel, which can cause damage to structures in their path. Damage here from Mt. Pinatubo, Philippines.
Lahars pick up material as they travel, which can cause damage to structures in their path. Damage here from Mt. Pinatubo, Philippines.
![Lassen Peak's Devastated Area photographed from the air in 1994....](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img3162.jpg?itok=zwawdEzO)
Lassen Peak's Devastated Area photographed from the air in 1994.
Lassen Peak's Devastated Area photographed from the air in 1994.
![Lava bubble burst explosion on active lava delta, Kīlauea Volcano, ...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img2943.jpg?itok=U-P2KlE1)
Two bubble bursts explode simultaneously as a consequence seawater mixing with lava in a lava tube beneath surface of a lava delta. Because of the confined conditions in the lava tube, explosive pressures build up as water, heated by contact with molten lava, expands instantly to steam.
Two bubble bursts explode simultaneously as a consequence seawater mixing with lava in a lava tube beneath surface of a lava delta. Because of the confined conditions in the lava tube, explosive pressures build up as water, heated by contact with molten lava, expands instantly to steam.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.