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Photos 7, page 6
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Lava Events
July 8-22, 2010
between the 1,900' and 1,300' elevation that continued to shed lava into several surface flows (see map) down as far as
the 1200' elevation on July 1; surface activity in the general area of the rootless shields continued through dawn as
permits, an overflight of the flow field is planned for today.

*TEB: Thanksgiving Eve Breakout, the designation used for lava flows that started with a breakout on November 21, 2007.

**
rootless shield: Hawaiian volcanoes are generally referred to as shield volcanoes due to their broad, gently-sloping sides. The shield-like
nature is the result of frequently erupting sheets of very fluid lava that, over time, cover extensive areas in a radial pattern. If you've been to the
southern part of the Big Island on a clear day, you've seen the beautiful, sloping shield of Mauna Loa Volcano that completely dominates the
landscape. Mauna Loa's shape was acquired in just such a way.

Rootless shields are smaller, shield-shaped mounds that form on active lava flows. But, in contrast to shield volcanoes like Mauna Loa, which
have deep roots into magma chambers below, rootless shields are fed by shallow lava tubes that flow just below the surface. Thus, they are
"rootless," because the source of their lava is not a deep conduit.

The shields are low-lying and can be difficult to spot from the air, but are unmistakable from the ground. The largest is about 40 m
(approximately 130 feet) high, and 400 m (approximately 1300 feet) wide. Amazingly, shields like this can be built in a week!

The rootless shields are not entirely stable. Like a dam, they may rupture or collapse, disgorging lava from their interiors. For example, it was
the rupture of the southeastern-most rootless shield that sent lava flowing toward the Royal Gardens subdivision earlier in January

Friday, July 9, 2010 8:14 AM HST (Friday, July 9, 2010 18:14 UTC)
Lava from the TEB vent flowed through tubes that carried lava down-slope to feed a growing rootless shield field between
the 1,900' and 1,300' elevation; the lower rootless shields continued to shed lava into surface flows (see map) down as far
as the 400' elevation on July 8; surface activity in this general area of the rootless shields continued through dawn.
So here's what's been happening since we were here last.  This is what we missed!
The following are excerpts, captions, and photos from the
HVO Kilauea Status Page:
Monday, July 12, 2010 8:50 AM HST (Monday, July 12, 2010 18:50 UTC)
Lava from the TEB vent flowed through tubes that carried lava down-slope to feed active surface flows. These flows had
reached down to the 200' elevation near the base of the pali by July 11; surface activity in this general area continued
through dawn.
HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
Saturday, July 17, 2010 7:39 AM HST (Saturday, July 17, 2010 17:39 UTC)
Lava from the TEB vent flowed through tubes that carried lava down-slope to feed active surface flows that
advanced
continued through dawn as suggested by thermal anomalies recorded in GOES-WEST images and reported by Civil
Defense officials and University of Hawai`i geologists overnight.

Sunday, July 18, 2010 8:17 AM HST (Sunday, July 18, 2010 18:17 UTC)
Lava from the TEB vent flowed through tubes that carried lava down-slope to feed active surface flows that advanced
through the coastal highway 130/137 intersection yesterday morning and were expanding to the southeast toward the
ocean and more slowly to the east toward nearby structures as reported by HVO and University of Hawai`i geologists
yesterday evening; surface activity in this general area continued through dawn as suggested by thermal anomalies
recorded in MODIS and GOES-WEST imagery and reported by County security personnel this morning.

Monday, July 19, 2010 7:57 AM HST (Monday, July 19, 2010 17:57 UTC)
Lava from the TEB vent flowed through tubes that carried lava down-slope to feed active surface flows that advanced
through the coastal highway 130/137 intersection over the weekend; active surface flows continued eastward advancement
toward nearby structures as reported by HVO and University of Hawai`i geologists yesterday; a second set of advancing
lobes was approximately 1 km (0.6 miles) to the northwest and also advancing toward this general area. Surface activity
continued through dawn as suggested by thermal anomalies recorded in GOES-WEST imagery this morning.

Tuesday, July 20, 2010 7:27 AM HST (Tuesday, July 20, 2010 17:27 UTC)
Lava from the TEB vent flowed through tubes that carried lava down-slope to feed active surface flows that advanced
through the coastal highway 130/137 intersection over the weekend; active surface flows continued eastward advancing to
within 70 m (230 ft) of the nearest structure as reported by HVO geologists at 8 pm last night; a second set of active lava
lobes was approximately 1 km (0.6 miles) to the northwest and also advancing toward this general area. Surface activity
continued through dawn as suggested by thermal anomalies recorded in GOES-WEST imagery this morning.
The above map is mislabeled.  It says "June 22, 2010" and it should be "July 22, 2010"
HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
Thursday, July 15, 2010 7:42 AM HST (Thursday, July 15, 2010 17:42 UTC)
Lava from the TEB vent flowed through tubes that carried lava down-slope to feed two active surface flows that were 900 m
continued through dawn.

Friday, July 16, 2010 7:57 AM HST (Friday, July 16, 2010 17:57 UTC)
Lava from the TEB vent flowed through tubes that carried lava down-slope to feed active surface flows that were 500 m
(1640 ft) northwest of the County Viewing Area yesterday; surface activity in this general area continued through dawn.
7/14/10
This image is a composite of a normal photograph and a thermal image, and shows the currently active flows
coming down the
pali towards the ocean. The active flow areas are shown as white and yellow, while older,
cooler flows are shown by purple hues. The flows this morning were about 900 meters from the
County
viewing area
, at the end of the Kalapana access road.
Flows reached the Kalapana access road in
the past day, and covered about 300 meters
plume of thick, black smoke.plume of thick,
black smoke.
Flows were also active in kipukas north and
pushing through thick vegetation.
This active lobe disregarded the fence and
continued south on its way to the ocean.
Wednesday, July 21, 2010 8:50 AM HST (Wednesday, July 21, 2010 18:50 UTC)
Lava from the TEB vent flowed through tubes that carried lava down-slope to feed active surface flows that advanced
through the coastal highway 130/137 intersection over the weekend and slowed over the past two days; active surface
flows continued eastward over highway 137 advancing about 50 m (160 ft) to within 40 m (130 ft) of the nearest structure
as reported by HVO geologists at noon yesterday. Surface activity continued through dawn as suggested by thermal
anomalies recorded in GOES-WEST imagery this morning.

Thursday, July 22, 2010 7:48 AM HST (Thursday, July 22, 2010 17:48 UTC)
their advance eastward along highway 137 with most flow expansion to the south; narrow lobes are also advancing at
GOES-WEST imagery this morning.
Left. Flows continued to be active along Hwy
137, inching closer towards houses in front
that has ruptured, spilling out the fluid front
that has ruptured, spilling out the fluid lava
within the flow.

Right. The advancing flows triggered many
small fires, with underbrush burned up to a
hundred meters ahead of the flow.
Lava from the TEB vent flowed through tubes that carried lava down-slope to feed active surface flows in two locations on
activity continued through dawn as suggested by thermal anomalies recorded in GOES-WEST imagery this morning.

Friday, July 23, 2010 3:16 PM HST (Saturday, July 24, 2010 01:16 UTC)
Lava from the TEB vent is flowing through tubes that carry lava down-slope to feed active surface flows in two locations on
(1) Lava moving along Hwy 137 advanced about 80 m (260 ft) to the east since yesterday, but this eastward movement is
south of the house that has been under threat the past few days. The house remains in jeopardy, though, because, as of
11:00 a.m. today, lava expanding north of Hwy 137 produced a small active flow that is creeping closer to the property.
The lava is also expanding south of Hwy 137 toward the ocean, and spreading laterally-eastward and westward-along a
fault scarp (cliff) that parallels the coastline. This scarp, on the north side of Hakuma horst, has blocked lava from taking a
direct path to the sea.
The potentially good news, however, is that the lava spreading to the west is approaching a low area in the fault scarp.
This could provide a path for flows to reach the ocean, which could slow the eastward advance of lava toward Kalapana.
(2) Scattered lava flows also remain active about 1 km (0.6 mi) west and upslope of the Hwy 137 flow.

*Hakuma horst: a horst is an section of earth that is raised between two nearly parallel faults so that its surface is higher than the surrounding
ground. The Hakuma horst is located along the coast west of Kalapana; it was responsible for diverting lava through Kalapana village in 1990
and appears to be having a similar influence on lava flows in 2010.
generally eastward direction. These meters
east of the County lava viewing area.

Right. Scorched ground extended out beyond
the flow margins, as the lava triggered small
fires that consumed adjacent grass and
underbrush.
scarp of the Hakuma horst (the vegetated
Lava flows have reached the north facing
scarp of the Hakuma horst (the vegetated
segment roughly shaped like California),
temporarily stopping flows toward the south,
sending them along the scarp to the east
and west. If the flows continue to inflate, they
will overcome the topography of the horst and
once again flow toward the ocean.
This composite image combines a thermal
image with a normal photograph, and shows
abutting the raised ground of the Hakuma
This composite image combines a thermal
horst, which is diverting the flows to the east
horst, which is diverting the flows to the east
and bringing them closer to residences.and
bringing them closer to residences.
Lava flow reached the north facing scarp