Images

Map view. Colored shaded-relief bathymetry map of Offshore of Half Moon Bay map area, generated from multibeam echosounder data. Colors show depth: reds and oranges indicate shallower areas; light blues, deeper areas. Illumination azimuth is 300°, from 45° above horizon.

Perspective view of coastal bathymetry looking onshore, St. Thomas, US Virgin Islands, mapped using lidar and depicted with false-color, showing detailed submerged features, including coral reefs.

Bottom simulating reflector imaged in 2014 by the USGS along a seismic line acquired south of Hudson Canyon during the Extended Continental Shelf cruise.  Image provided by D. Hutchinson and reproduced from USGS Fact Sheet 3080.

Acoustic backscatter data show the intensity of an acoustic pulse off the seafloor and back to a ship. Brighter tones indicate a strong intensity (possibly harder seafloor?), while darker ones indicate a weaker intensity (possibly softer seafloor?).

State-of-the-art multibeam and bathymetric sidescan sonar systems collect high-resolution bathymetry and acoustic backscatter data.

Pollution performance curves for different ceramic and non-ceramic insulators. The pink shaded area represents an Ave. ESDD/NSDD 0.02/10.7 - 0.04/19.1 mg/cm2; yellow represents an Ave. ESDD/NSDD 0.1/60 - 0.3/106 mg/cm2; purple an Ave. ESDD/NSDD 0.3/113 - 0.6/218 mg/cm2

A clear view today of Pu‘u ‘Ō‘ō's summit revealed no significant change during the past week. The cross-sectional area of the active lava stream in the tube on the flank of Pu‘u ‘Ō‘ō was the same as measured on December 22, suggesting no change in lava discharge from the vent.

Kīlauea's East Rift Zone lava flow remains active upslope from the Pahoa Marketplace area, visible at lower right. The leading edge stalled on December 22, but breakouts just upslope widened the flow field and then overtook the flow front during the past few days. The new leading edge advanced the flow front about 150 m (165 yd) since December 27.

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea's active East Rift Zone lava flow. The area of the flow on December 22 at 3:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 30 at 2:30 PM is shown in red.

This large-scale map shows the distal part of Kīlauea's active East Rift Zone lava flow in relation to nearby Puna communities. The area of the flow on December 22 at 3:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 30 at 2:30 PM is shown in red.

This small-scale map shows Kīlauea's active East Rift Zone lava flow in relation to lower Puna. The area of the flow on December 22 at 3:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 30 at 2:30 PM is shown in red.

Close view of incandescence in spatter cone within a pit at the northeast edge of Pu‘u ‘Ō‘ō's crater (the smaller pit visible to the right side in the adjacent photograph). Note small flows that cover the floor of this small crater.

The leading part of the flow consisted of several small, active lobes this afternoon. The front of the lobe that crossed the firebreak was stalled, though breakouts were active about 50 m (55 yd) upslope. Another lobe (area of most visible smoke in center) was about 300 m (330 yd) upslope of the tip and 150 m (165 yd) upslope of the firebreak.

This satellite image was captured on Thursday, December 25, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 satellite. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see. Bright red pixels depict areas of very high temperatures and show active lava. White areas are clouds.

This satellite image was captured on Thursday, December 25, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 satellite. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see. Bright red pixels depict areas of very high temperatures and show active lava. White areas are clouds.

Kīlauea's East Rift Zone lava flow remains active upslope from the Pahoa Marketplace area, visible at upper left, though activity has waned over the past week. The flow was very close to a firebreak road cut several months ago. The Pahoa Transfer Station is at upper right. The view is to the southeast.

A small, but fairly vigorous, breakout was active this afternoon about 1 km (0.6 miles) behind the tip of the flow. This is the narrowest part of the flow, with a width of about 30 m (33 yards). The smoke in the distance is from surface lava near the front of the flow. The view is to the northeast.

This photo shows a closer view of the picturesque breakout at the narrow section of the flow.

Breakouts were also active much farther upslope. Leaks from the lava tube near the True/Mid-Pacific geothermal well site (at left) have been active for a couple of weeks, and are slowly invading forest to the north. View is to the west-southwest.

A breakout from the lava tube has also been active on the upper part of the flow field near Pu‘u ‘Ō‘ō since December 5. The smoke is from a narrow finger of lava burning lichen on an older Pu‘u ‘Ō‘ō lava flow. Pu‘u ‘Ō‘ō is at upper right. The view is to the south-southwest.

This small-scale map shows Kīlauea's active East Rift Zone lava flow in relation to lower Puna. The area of the flow on December 19 at 8:30 AM is shown in pink, while widening and advancement of the flow as mapped on December 22 at 3:00 PM is shown in red.