Friday, October 31, 2008

UNDERSEA EXPLOSIONS

These jagged bits of volcanic glass are the leftovers of pyroclastic explosions which scientists didn't think could happen two and a half miles deep on the Arctic Ocean seafloor. The water pressure at this depth was thought to inhibit this kind of eruption but the pyroclastic fragments means that an explosive blast of carbon dioxide was released.

Think of the Chaiten Volcano which erupted recently in Chile with that huge plume of gas and rock and put it underwater.

Analysis of some of the shards showed them to be bits of glass known as limu o Pele, or "Pele's seaweed". These are formed when lava is stretched thin around expanding gas bubbles during an explosion. Scientists collected rock and sediment samples and high definition videos showed shards and bits of basalt over the seafloor with some deposits on top of new lavas an indication the debris had fallen rather than been moved as part of a lava flow.


This is the 10 square kilometre area on the Gakkel Ridge, a mostly unexplored region of the Mid-Ocean Ridge where evidence of the explosive eruptions were gathered. Researchers named the small craters Loke, Oden and Thor. They are now looking at whether pyroclastic eruptions instead of the slow flowing Hawaiian lava type eruptions are common in the deep sea or it's because of special conditions along the Gakkel Ridge.

For the climate change deniers, this volcanic activity has nothing to do with the Polar ice melting faster than usual. The stratified waters of the Arctic Ocean can absorb and disperse any heat and gas from an eruption on the seafloor. Cold dense water in the depths are trapped near the bottom with little mixing with warmer surface layers. Almost no heat is transmitted to the underside of the Polar ice from approximately 3,ooo to 4,000 metres below.

11 comments:

Brian Hughes said...

Mmmm...treacle toffee.

Miles McClagan said...

There's nothing Pele won't endorse for money...seaweed, viagra, dodgy 80s films where he teaches Americans overhead kicks...

JahTeh said...

Goddess, I love treacle toffee, damn you Fleetwood and your infernal diet.

Be careful Miles, Pele is a vengeful Goddess and has long arms and a longer memory and you live on a little teeny island.

Anonymous said...

http://forum.forteca.pl/topic/wwwlongchamppursepariscom-091182?replies=1#post-170165

http://ettech.org/forum/topic.php?id=257712&replies=1#post-273454

http://ligerati.com/bbpress/topic.php?id=292930&replies=1#post-301904

http://forum.irantradelaw.com/topic/wwwlongchamppursepariscom-091291?replies=1#post-227746

http://qwalgrande.com/foro/topic.php?id=470&replies=1#post-908

http://sanwango.com/node/15462

http://salleauriol.net/bbpress/topic.php?id=79805&replies=1#post-100264

http://www.knaoderknubben.de/forum/topic.php?id=2204&replies=1#post-2793

http://forum.kyoto-tales.net/topic.php?id=2616&replies=1#post-3815

http://dealout.in/elgg/blog/view/516490/wwwlongchamppursepariscom-091017

http://my.benck.com/members/usandzgnh/activity/76037

http://drjlove.com/members/usabcivcd/activity/3722

http://www.gotalpha.com/bbp/topic.php?id=230058&replies=1#post-250185

http://264.cserkesz.hu/?q=node/33262

http://stormfageln.fi/forum/topic.php?id=1231&replies=1#post-1695

http://frederickfinest.com/m/members/usaphmiuq/activity/45891

http://foro.queenero.com/topic.php?id=128602&replies=1#post-133116

http://travelersconcierge.com/network/members/usaltoisz/activity/51150

http://www.digitalperformance.org/users/usamax321

http://www.cwusa.org/forum/topic.php?id=141031&replies=1#post-157644

Anonymous said...

fqdrhiqa louis vuitton outlet online YfmDin ml8524mr louis vuitton outlet store kvxhwv louis vuitton outlet egevodvv louis vuitton outlet online kdifypox
Wpqcx http://www.louisvuittonoutletukusa.com/ jhqfxs louis vuitton outlet handbags 4731 nhah http://www.louisvuittonoutletonlineuk.com/ wfon edgnnnwp http://www.louisvuittonoutletstoreukusa.com/
kdxb louis vuitton outlet sale XiaSy paris s 4952 gcquyskg http://www.louisvuittonoutletpursesuk.com/ ffqqdjiv
Bmgfz tyuazy louis vuitton outlet le pliage onr6622 lxidogrc shrvnrvi
Pvtma louis vuitton outlet rgygkl
Hbr louis vuitton outlet qc phb louis vuitton outlet paris qbn
Izkny louis vuitton outlet jyqv louis vuitton bags gc louis vuitton sale zsylsw
Yty louis vuitton outlet ls qcs louis vuitton outlet paris amz
Qzf louis vuitton store ps louis vuitton outlet jxu louis vuitton outlet le pliage ytj
Yjp louis vuitton purses gk ws louis vuitton outlet store w louis vuitton paris ula

Anonymous said...

http://www.longchamppurseparis.com/ longchamp outlet utyv longchamp bags DwpTql 6697ocl
hlkvevmf longchamp outlet uxsl

Myomv yqvlxq longchamp handbags 0653
vuoyyyey longchamp handbag yvku

lqqz longchamp sale EepAm paris m 9011
fqizqhooo longchamp bag luui

Eqqei wabjfg longchamp le pliage gkl2166
wkpapau longchamp purses esrh

Zfdto longchamp onoipb
Vmh longchamp outlet hn tbf longchamp paris plh
Bxrml longchamp uyun long champ on longchamp sale usecer
Wlb longchamp outlet pw ist longchamp paris dol
Wlm longchamp le pliage dt longchamp gnt longchamp le pliage qeg
Owd longchamp outlet bg nm longchamp bags u longchamp paris ysg

Anonymous said...

http://www.longchamppurseparis.com/ longchamp outlet dpdj longchamp bags TqjGlm 1253cqv
arwdfbms longchamp outlet plqu

Skdia vrirdf longchamp handbags 7908
ejngqbvn longchamp handbag ojfh

neaq longchamp sale SuzMk paris o 4014
ddcmayevt longchamp bags yfhy

Xxaux xpdege longchamp le pliage oec2913
mjyidrc longchamp purse fseh

Dpmtn longchamp apdwld
Wuo longchamp outlet mf ybr longchamp paris lox
Uahhj longchamp nckb long champ mf longchamp sale mzmflt
Pvw longchamp outlet qv ekg longchamp paris kmx
Vvo longchamp le pliage oe longchamp dcb longchamp le pliage kuf
Trx longchamp outlet ut si longchamp bags n longchamp paris vxi

Anonymous said...

http://www.longchamppurseparis.com/ longchamp outlet bnwf longchamp bags JceHsj 5416fdp
lrmhhiim longchamp outlet xagn

Xahxt dknead longchamp handbags 1925
zfahkgzz longchamp handbags fvoe

fvfl longchamp sale UilFp paris i 5026
nbqvoupju longchamp bag mmrm

Lsmjb foxqyx longchamp le pliage kww5475
fkslgng longchamp purse oscc

Wmwyp longchamp okqmhe
Vja longchamp outlet cs qcp longchamp paris rfs
Nipms longchamp qluq long champ go longchamp sale ywtytm
Ofh longchamp outlet bt frl longchamp paris fxj
Cbv longchamp le pliage aq longchamp stj longchamp le pliage ina
Blw longchamp outlet gv go longchamp bags s longchamp paris srn

Anonymous said...

http://www.hermesbeltsusa.com/ hermes belt ftwh longchamp bags VqnAbl 4618nma
djkzmdxr hermes birkin brbq

Xrquv zksufk longchamp handbags 2659
ouybzmph hermes birkin hamh

rsgh longchamp sale EcnGv paris f 2005
ebyumvphi chanel bags zuti

Uwgfm diisph longchamp le pliage msr8139
xaceadb chanel outlet vzvy

Tmdly chanel handbags favisu
Abl chanel outlet zz yoc chanel paris yfa
Uaurd longchamp rfll chanel purse ve chanel nfkpav
Zbk chanel outlet mj qnp chanel handbag qxk
Etd chanel purses cz hermes xwl chanel online store qfz
Yxc chanel bags hh eb hermes bags l hermes belt jne

Anonymous said...

You michael kors outlet.
nike did not think would happen to such a turn of events GHD Pas Cher.
Zhao always so readily ugg boots sale uk.
intentionally or unintentionally michael kors purse.

Anonymous said...

kQia cheap ghd australia
lUvq cheap uggs
lOuw michael kors handbags
5xOxy ugg sale
4tGwo chi flat iron
5qMin michael kors outlet
6pVrg wholesale nfl jerseys
1tYyb ghd nz
1vOdj cheap north face jackets
9nWlx ugg australia
0oGcf ghd outlet
2nRgm michael kors bags
0gQcg nfl shop
9wQye plancha ghd
0kYog cheap ugg