These were due to an enormous amount of exceedingly fine dust blown to a great height by the volcano's explosion, and then globally diffused by the high atmospheric currents.

These events would have released massive amounts of dust and ash into the atmosphere, reducing surface sunlight, hindering photosynthesis, and severely disrupting Earth's biosphere.

These include emissions of airborne pollution in the form of dust, gases, noise and vibration when operating machinery and during blasting in quarries, and damage to countryside from quarrying.

These roads have the same base layer as gravel roads but are covered with a thin layer of bitumen to reduce maintenance cost and dust formation.

These much wider disks were found to be circular and free of clumps, with dust particles ranging from 1 – 50 μm in size.

These observations supported a number of longstanding hypotheses about comet construction, particularly Fred Whipple's " dirty snowball " model, which correctly predicted that Halley would be composed of a mixture of volatile ices – such as water, carbon dioxide and ammonia – and dust.

These volumes were advertised as being written by the author of Nancy Drew, and were promoted heavily on dust jackets for this series.

These layers may have been formed by deceleration due to radiation pressure as the dust has moved towards the stars.

These immense dust storms — given names such as " black blizzards " and " black rollers "— often reduced visibility to a few feet ( a meter or less ).

These symbiotic binary systems are composed of a red giant and a hot blue star enveloped in a cloud of gas and dust.

These include sunning themselves, dust bathing and water bathing.

These other eruptions had already built up a substantial amount of atmospheric dust.

These dust trails are sometimes observed in comet images taken at mid infrared wavelengths ( heat radiation ), where dust particles from the previous return to the Sun are spread along the orbit of the comet ( see figures ).

These result because the diamond dust crystals form directly as simple hexagonal ice crystals — as opposed to freezing drops — and because they generally form slowly.

These clumps of dust could be explained by gravitational interaction with a planet orbiting just inside the ring of dust.

The center of our galaxy also shines brightly in the far-infrared: These emissions are from dust in circumstellar shells around numerous old red giant stars.

These stars heat up the dust and cause it to glow brightly in the infrared.

These objects can be seen with minimal obscuration from dust because the constellation is not in the direction of the galactic plane.

These winds are likely to be driven by radiation pressure on dust condensing in the upper atmosphere of the stars.

These effects can sometimes cause a slight loss of sharpness in the scanned image when Digital ICE or a similar infrared channel dust removal function is used.

These screens should be vacuumed or washed to remove dust.

These include dust from solid rocket motors, surface degradation products such as paint flakes, and coolant released by RORSAT nuclear powered satellites.

These roads are built to British standards with a maximum of three lanes with hard shoulders.

These gravity-fed basins will allow 60 % of the water used in each transit to be reused ; the new locks will consequently use 7 % less water per transit than each of the existing lock lanes.

These are referred to as ' lanes ,' and are used to indicate role shifting and body movement.

These lanes help reduce the number of cars on the highway and thus reduces pollution and traffic congestion by promoting the use of carpooling in order to be able to use these lanes.

These two lanes were built in the late 1960s.

These are roads with more than four lanes.

These are roads with two to four lanes

These lanes do not operate on all tracks and have been a point of argument between many industry participants.

These specialized " buffalo runners " were young men trained in animal behavior to guide the buffalo into the drive lanes.

These lanes were opened to traffic on November 29, 2010.

These are split in to lanes and squads, where lanes are the learning stage and squads are the competing stage.

These dangerous low-standard ramps ( due to lack of acceleration / de-acceleration lanes ) are due to be replaced in a planned extensive reconstruction of the QEW that is currently underway.

These havens were often near maritime shipping lanes.

These HOV lanes were constructed in 1998 as part of the BC MOT's " Go Green " project to promote the use of HOV vehicles, and cost 62 million dollars.

These reversible lanes allow 2 lanes of traffic to flow towards or away from the city, depending on the time of the day.

These cycleways consist of a mixture of dedicated cycle lanes and mixed use cycle / walk ways.

These new lanes are one stage of a controversial project to widen the beltway, with the second stage involving widening the beltway to 12 lanes ; opponents have called for various alternatives to this project ( as well as the controversial Intercounty Connector project ) which would divert many vehicles off the northern beltway.

These were followed by articulated lorries, one of which jack-knifed sideways across all three lanes of the motorway.

These narrow to two lanes before merging with a single lane from westbound Highway 401 immediately south of Sheppard Avenue.

These road signs are lane directional signs that designate right lanes for the M11