Frsluflokkur: Vsindi og fri

Miki svifryk borginni 2011-05-02

Tluvert svifryk er n borginni.

stan meal annars sandstormur fr Landeyjasandi, eins og sst myndinni a nean.

Myndin a nean snir mlingar styrk svifryks (PM10) vi Grenssveg.

MYNDIR hrhttp://turdusjardvisindi.blogspot.com/2011/05/particulate-matter-in-reykjavik-2011-05.html(komu ekki me flutningnum).


Loftgi kjlfar eldgossins Eyjafjallajkli 2010

Throstur_others_EyjoAsh

Veggspjaldi, smelli til a sj.

Veggspjald sem kynnt var rstefnu EGU Vn og Vorrstefnu Jarfraflagsins aprl 2011.

gripi ( ensku)*:

High levels of particulate matter due to ash plume and ash re-suspension following the Eyjafjallajkull eruption.

Throstur Thorsteinsson1, Thorsteinn Johannsson2 and Gudrun Petursdottir3
1Institute of Earth Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik (ThrosturTh@gmail.com), 2The Environment Agency of Iceland, Sudurlandsbraut 24, 108 Reykjavik, 3Institute for Sustainability Studies, University of Iceland, Gimli v/ Hsklatorg, 107 Reykjavk

The dangers to people living near a volcano due to lava and pyroclastic flow, and, on ice or snow covered volcanoes, jkulhlaup (floods) are well known. The level of risk due to ash fall is, however, not as well known.

The eruption at Eyjafjallajkull, 14 April to 20 May 2010 (last day of visible plume), produced abundant particulate matter (PM). After the volcanic activity ceased high PM concentration has been measured on several occasions, due to re-suspended ash.

The particulate matter (PM10) concentration in the small town of Vk, 38 km south-east from the erupting Eyjafjallajkull volcano, reached levels that are 25 times the recommended health limit of 50 mg m-3 averaged over 24 hours, on 7 May 2010, with 10-min values reaching 13000 mg m-3. Even after the eruption, values as high as >8000 mg m-3 (10-min average), and >900 mg m-3 (24-h average), were measured.

In Reykjavik, 125 km WNW of the volcano, the PM10 concentration reached over 2000 mg m-3 (10-min average) during an ash storm event on 4 June 2010. The annual concentration in Reykjavik is about 25 mg m-3, and the only previous events of comparable magnitude are peaks during New Year's Eve celebration.

The eruption at Eyjafjallajkull posed a potential health risk to the inhabitants in the regions hit by severe ash fall. However, preliminary studies indicate that the ash has had minor short term health effects. Studies show that the crystalline silica content of the ash is negligible, so that the persistence of deposited ash in the soils and environment should not present a significant silicosis hazard. During periods of PM10 concentration over about 5000 mg m-3, most residents stayed indoors, or wore protective air filters and goggles when they had to go outside.

A study is ongoing to examine the potential long term health effects of the volcanic eruption, including the high concentration of PM10 during and after the eruption due to re-suspended ash in the area.

* Vinsamlegast hafi samband vi rst (finni tlvupstfang veggspjaldi) ef vilji vitna ea nota ggn sem birtast veggspjaldinu.


Mli-einingin eitthva a skolast til ?

frtt mbl.is talar Ellii Vignisson um a sorpbrennslan eigi a draga r rykmengun nir 10 milligrmm rmmetra, en segir jafnframt a "ykmengun gtum Reykjavk mlist stundum kringum 600 milligrmm,"

Hr hefur eitthva skolast til.
Hsta gildi sem mlst hefur Reykjavk er um 1500 mkr-grmm rmmetra, skustorminum 4. jn 2010, ea um 1.5 milligramm rmmetra.

N veit g ekki hvort sorpbrennslunni er tla a halda sig vi 10 milligrmm ea 10 mkr-grmm, en arna munar 1000-fldu !

(Mgulega mistk blaamanns einnig).


mbl.is Geta dregi r sorpbrennslu um 60%
Tilkynna um vieigandi tengingu vi frtt

Fn samantekt nlegri skrslu fr Kaliforna um hrif fns svifryks heilsu manna

Are dust, smoke and diesel exhaust really killing 9200 people a year? - California Watch (blog)

Less than the width of a human hair, fineparticulate matterfrom smoke, dust, coal and diesel exhaust are so small they slip through the lungs and into the... "
Fn samantekt nlegri skrslu fr Kaliforna um hrif fns svifryks.
ar segir meal annars a fnt svifryk kosti 9200 manns lfi hverju ri Kaliforna.

skufjk 7. september 2010

Sj gervitunglamyndir og tlur um styrk svifryksmengunar essari frslu:
skufjk suurlandi og Reykjavk og sm sandstormur norurlandi
mbl.is Svifryk yfir mrkum
Tilkynna um vieigandi tengingu vi frtt

Geysir gs

From Summer 2010

essu albmi eru nokkrar myndir teknar sumar. Meal annars 3 arar af Strokk vi a a fara a gjsa og egar hann gs. Einnig myndir fr ingvllum, af blmum og fuglum.

Geysir gs - hvernig gs Geysir

Vatn sem smgur niur gegnum bergi hitnar vegna heits bergs a nean.

Yfirleitt rs heita vatni til yfirbors og kalda sekkur. goshverum er vatnsrsin hinsvegar yfirleitt svo rng a lrtt blndun sr ekki sta.

Kalt vatn situr v efst slunni og vatni verur "super-heated" fyrir nean, a er, hiti vatnsins near rsinni er yfir suumarki vegna rstingsins af vatninu sem situr efst slunni.

A lokum verur suu nest rsinni og loftblur taka a stga upp. Vi a lyftist hluti "kalda" vatnins af rsinni og rstingurinn lkkar.

Vi a sngg-sur og vatni sem var yfir suumarki vegna rstings og breytist skyndilega gufu.

Kalda vatni streymir san aftur rsina, byrjar a hitna a nean og atburarrsin endurtekur sig.


Hitafrvik jl 2010 - hnattrnt yfirlit

temperature_gis_201007

temp_gis_201007_palette

essi mynd, fr NASA Earth Observatory, snir hitafrvik jl 2010 mia vi sama mnu rin 1951 til 1980.

Hnattrnt var hitinn um 0.55C hrri en mealtali og jafnai nnast hitameti, me runum 1998 og 2005.


Grureldar - kynning drgum a vibragstlun og notkun Google Earth fyrir Skorradal

sumar hafa tveir starfsmenn unni Brunamlastofnun vi a safna upplsingum er tengjast grurelda-httu og setja r fram "Vibragstlun" og sem ekjur sem nota m t.d. Google Earth.

Hr a nean er rstutt kynning efni erinda eirra. Meira er vntanlegt, m.a. skr sem hgt er a opna Google Earth til a skoa astur Skorradal.

Er a von mn/okkar a etta verkefni vekji huga annara, sr lagi sumarhsa-eiganda, og huga veri a httunni vegna grurelda skipulagi framtinni.

Slurnar (rstutt) m nlgast me v a fylgja essum hlekk.

skufjk frttunum fr 1 jl 2010

Sj frsluna undan http://turdus.blog.is/blog/turdus/entry/1073512/
mbl.is skubylur undir Eyjafjllum
Tilkynna um vieigandi tengingu vi frtt

Grureldar Arizona, BNA

Grureldurinn Arizona, BNA, hefur veri tluvert frttum nlega. Aallega vegna ess a hann gnar hsum svinu.

Schultz Fire North of Flagstaff, AZ

essi gervitunglamynd fr MODIS er fr 21 jn 2010. Fr NASA kk s Jeff Schmaltz,MODIS Rapid Response Team.


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