Wulkan gaz bulutlary, ýalta suwlar we limnik atylmagy¶

Wulkan we geotermiki zolaklar, partlaýjy kül atylmasa-da, göze görünmeýän, ömre howp salýan gazlary çykarýar, çuň wulkan krater kölleri birden ** limnik atylmagy ** (kölüň agdarylmagy) diýlip atlandyrylýan seýrek betbagtçylykda arassa ** uglerod dioksidiniň ($ CO_2 \() ** bulutlaryny boşadyp we boşadyp biler. Asmana göterilýän wulkan külünden ýa-da ýangyn tüssesinden tapawutlylykda, iň ganly üç wulkan we geotermiki gaz, ** kömürturşy gazy (\) CO_2 \() **, ** wodorod sulfidi (\) H_2S \() ** we ** kükürt dioksidi (\) SO_2 \() ** adaty howadan ** (\) 1.2 tekst {gury} 2.2 d tekstden has agyr). Bu gazlar ýokaryk ýüzmegiň ýerine, göze görünmeýän suwuk derýa ýaly ýere akýar, jülgeleriň, wulkan kraterleriniň, ýerzeminleriň, gazuw-agtaryş işleriniň, gar gowaklarynyň we kenarýaka depressiýalarynyň içine girýär. Şol bir wagtyň özünde, eredilen kenarýaka lava okeana girende, deňiz suwuny konsentrirlenen ** gidroklor kislotasynyň ($ HCl $) duman we mikroskopik wulkan aýna şkaflary ** laze (lava duman) ** diýip gaýnadýar. Diri galmak, bütinleý pes ýerdäki gaz duzaklaryny tanamak, derrew ** ýokaryk çykmak we geçelge ** çykmak we 10 $ tekstden} 30 tekst {göterim} $ kömürturşy gazynyň ýa-da $ 1000 tekst {ppm} $ wodorod sulfidiniň derrew huşuň ýitmegine sebäp bolmagyna baglydyr.

Indi et¶

1. ** Göni göni ýokaryk çykyň we geçelgäni (şemalyň 90 gradus burçunda) derrew süýşüriň. ** Agyr wulkan gazlary ($ CO_2 $, $ H_2S $, $ SO_2 \() jülgelerden, derýalardan we jülgelerden suw ýaly aşak akýar, şemal bolsa kükürt dioksidini (\) SO_2 $) we kenar ýakasyndaky gidroklor kislotalaryny basýar. Hiç haçan jülge ýolundan aşaklygyna ylgap, gaz buludyndan öňe geçmäge synanyşmaň: howuz gaz gatlagynyň üstündäki binanyň iň ýakyn gerşine, depesine ýa-da ýokarky gatyna çykyň we şemalyň ugruna perpendikulýar hereket ediň.
2. ** "Tebigatyň gaz detektory" üçin ýer synlaň: ölen guşlar, ölen mör-möjekler, ölen mallar ýa-da birden saklanan awtoulag dwigateli. ** Uglerod dioksidi düýbünden görünmeýär we düýbünden yssyz. Wulkan kenaryna, geotermiki fumarole meýdanyna ýa-da krater kölüne ýöräp ýa-da sürüp barsaňyz we birden täze ölen guşlary, syçanlary, gurbagalary ýa-da mör-möjekleri yzda görmedik bolsaňyz ýa-da ýanýan awtoulag dwigateliňiz birden pytrasa we duralgalar bolsa ($ CO_2 $ atmosfera kislorodyny $ 15 tekst {{{{) $ CO_2 $ jübü. Demiňizi saklaň we derrew ýokaryk ylgaň.
3. ** Hiç haçan burnuňyza "çüýrük ýumurtga" wodorod sulfidiniň ($ H_2S \() gazyna ynanmaň: olfabriki ysmaz sekuntda bolup geçýär. ** Pes, zyýansyz konsentrasiýalarda (\) 0.01 text {to 10 text {ppm} $) wodorod sulfidi çüýrük ýumurtga ýaly güýçli ys alýar. Şeýle-de bolsa, $ H_2S $ ömre howp salýan derejä ýetensoň (** 100 $ -dan ýokary tekst {to} 150 text {ppm} $ **), burnuňyzdaky olfabriki nerwini ** 2-15 sekuntda ysmaz edýär, bu ys düýbünden ýok bolýar we howanyň arassalanandygyny çaklaýarsyňyz. Yssy çeşmäniň, palçykdan ýa-da fumarolyň ýanynda güýçli çüýrük ýumurtgalaryň ysyny alsaňyz we gözüňiz dikilende ýa-da başyňyz aýlananda ys birden ýitip gidýän bolsa, derrew şemala çykyň.
4. ** Diňe kislota gazlary üçin ($ SO_2 $ we $ HCl $ laze) çygly mata ýa-da çörek-gazlandyrylan köýnek bilen dem alyň; Hiç bir mata ýa-da süzgüç maskasynyň $ CO_2 $ garşy işlemeýändigine düşüniň. ** Kükürt dioksidiniň ($ SO_2 \() ** ýa-da kenarýaka ** gidroklor kislotasynyň lazasy (\) HCl \() ** bulutda tutulsa, burnuňyzy we agzyňyzy suwa batyrylan mata bilen ýapyň (ýa-da has gowusy, bir çemçe ** çörek sodasy bilen garylan we natriý bikarbonat). Şeýle-de bolsa, ** çygly mata, N95 maskasy ýa-da P100 himiki kartrij respirator sizi uglerod dioksidinden (\) CO_2 $) asfiksiýadan gorap bilmejekdigini ýadyňyzdan çykarmaň: $ CO_2 $ howadan kislorody süýşürýär, şonuň üçin diňe ýokary çykýan howada çykmak ýa-da çüýşeli kislorod / SCBA howasy dem alar.
5. ** Wulkan krater kölüniň kenarlaryny we jülgelerini kölüň suwy köpürjiklän, gyzyl-goňur öwüsýän ýa-da çökýän bolsa (Limnik atylmagy) derrew ewakuasiýa ediň. $ CO_2 $ - ýer ýüzüne çykýan doýgun suw), ** limnik atylmagy başlandy. Airüzlerçe müň tonna howa has agyr $ CO_2 $ gaz krateriň üstünden dökülip, ​​töweregindäki derýa jülgelerine sagatda ** 20-50 kilometre (sagatda 12-30 mil) ** geçer. Iň azyndan ** 50-den 100 dik metre (165-den 330 fut) ** daga çykyň.
6. ** highokary ýerlerde ýokary akymly kislorod ýa-da CPR dolandyryň we 15 minutlap kislota bilen ýakylan gözleri arassa suw bilen ýuwuň. gyssagly kömek belgileri). Huşsuz bolsa we adaty dem almasa, başla CPR derrew ($ H_2S $ ýa-da kislota gazy dem alsa, jübü maskasyny ýa-da diňe el bilen döş gysyşlaryny ulanyň). $ SO_2 $, ** vog ** ýa-da ** laze ** -den hiňlenýän bolsa, bellenen ** albuterol / salbutamol bronhodilatator inhalerini ** ulanmaga kömek ediň we ýakylýan gözleri arassa suw bilen 15 minutlap ýuwuň.

Wulkan gazy, ýalta we limnik atylmagy diri galmak karary agajy¶

Haýsy wulkan gazy bilen ýüzbe-ýüz bolýandygyňyzy kesgitlemek we diri galmagyň takyk hereketini ýerine ýetirmek üçin bu meýdan triage akym çyzgysyny ulanyň.

flowchart TD
    Start["Wulkan / Geotermiki / Krater köli gaz gyssagly: <br/> Fumarole meýdançasy, Lawa ummanynyň kenar ýakasy ýa-da Krater köli"] --> HazardType{"Haýsy gaz ýa-da erik <br/> gurşawda?"}

    HazardType -->|"1. Pes jülge, krater pol, ýerzemin, gar çukury, <br/> ýa-da goňur öwüsýän krater köli / köpürjik"| HeavyGas["GÖRNÜŞLI CO2 (Limnik atylmagy / Mazuku) ORA-da ýokary H2S: <br/> 1. Egilmäň ýa-da pes depressiýa girmäň <br/> 2. Baş aýlanýan ýa-da ölen guşlar / haýwanlar görse, dem alyň <br/> 3. TERJIME EDIP BOLMAK (> = 30-100 m dikligine) <br/> (Süzgüç maskalary we çyg matalar CO2 asfiksiýasyny bes etmeýär)"]

    HazardType -->|"2. 'Burnt match' -yň ýiti bogulmagy, <br/> Gözleri / bokurdagy ýa-da howply wog erik"| SO2Vog["SULFUR DIOXIDE (SO2) / WOLKANIK SMOG (VOG): <br/> 1. UPHILL we CROSSWIND (şemaldan 90 dereje) süýşüriň <br/> 2. Çygly mata bilen dem alyň (çörek bişirilen suwda iň oňat görnüşde) <br/> ýa-da P100 + Kislotaly gaz patron respiratoryny ulanyň <br/> 3. Içerde bolsa: windowshli penjireleri / gapylary ýapyň, arassa howa kabul edişini öçüriň, <br/> we dem alýan bolsaňyz demgysma halas ediş inhalerini ulanyň"]

    HazardType -->|"3. Eredilen Lava <br/> Okean deňiz suwuna girýän ak bug ýaly erik"| LazePlume["GIDROKLORIK Kislota 'LAZE' (Lava Haze + Aýna şkaflar): <br/> 1. Hiç haçan ummanyň lava giriş nokadynyň aşagynda durmaň <br/> 2. Iň azyndan 500+ metr UPWIND / CROSSWIND süýşüriň <br/> 3. Gözleri sürtmäň (mikroskopik Pele aýna şkaflary dyrnaklary) <br/> 4. Gözleri we derini sahy arassa suw bilen 15 minut ýuwuň"]

    HeavyGas --> CasualtyCheck{"Gaz zolagynda kimdir biri ýykyldymy?"}
    SO2Vog --> CasualtyCheck
    LazePlume --> CasualtyCheck

    CasualtyCheck -->|"Pes gaz çukurynyň / depressiýanyň içinde heläkçilik"| WaitSCBA["STOP: SCBA howa tanky bolmazdan pes gaz jübüsine girmäň <br/> (çäkli / wulkan gazynyň ölüminiň 60% -i halas ediji bolar) <br/> Fireangyn halas ediş SCBA çykarmak üçin 911/112/999 jaň ediň"]

    CasualtyCheck -->|"Şemalladylýan beýik ýerde heläkçilik"| FirstAidHigh["1. Dem almagy barlaň: Jogap bermese we dem almasa CPR başlaň <br/> 2. Huşsuz dem alyş heläkçiligini gapdal dikeldiş ýagdaýyna ýerleşdiriň <br/> 3. Gözleri ýönekeý suw bilen ýuwuň; SO2 / Laze bronhospazm üçin bronhodilatator beriň <br/> 4. Gijikdirilen öýken ödeminiň keselhanasynda 24-den 48 sagada çenli gözegçilik ediň"]

5 öldüriji wulkan we krater-köl gaz howplaryny deňeşdirmek¶

Her wulkan gazynyň aýratyn molekulýar agramy, ysy we öldürmek mehanizmi bar. Olary tapawutlandyrmak üçin bu USGS we IVHHN (Halkara wulkan saglygy howpy tory) kliniki tablisasyny ulanyň.

Deep dive 1: Limnic eruptions (Crater lake overturns) and "Mazuku" death pockets¶

A limnic eruption (also called a lake overturn) is one of the rarest and most terrifying natural disasters on Earth. In 1984 at Lake Monoun (killing 37 people) and on August 21, 1986 at Lake Nyos in Cameroon, a deep volcanic crater lake suddenly erupted without a drop of lava, releasing up to 300,000 to 1.6 million metric tons of pure dissolved carbon dioxide (\(CO_2\)) gas. A silent, invisible cloud of \(CO_2\) 50 meters (165 feet) thick spilled over the crater rim and flowed down the surrounding river valleys at 20 to 50 kilometers per hour (12 to 30 miles per hour), extinguishing every cooking fire, stalling vehicles, and silently suffocating 1,746 people and over 3,500 cattle in their sleep up to 25 kilometers (15 miles) away.

How a limnic eruption works (The "Champagne Bottle" Lake Mechanism)¶

1. Volcanic \(CO_2\) injection at the bottom of a deep, unmixed lake: Magma sitting kilometers beneath an extinct or dormant volcanic crater (maar) continuously leaks carbon dioxide gas up through the lake bed. In most temperate lakes, seasonal winter cooling causes the surface water to sink and mix the lake every year (holomictic lakes), releasing harmless small amounts of gas. However, in deep tropical lakes like Lake Nyos, Lake Monoun (Cameroon), and Lake Kivu ( located on the border of the Democratic Republic of the Congo and Rwanda, holding roughly \(300\text{ cubic kilometers}\) of dissolved \(CO_2\) and \(60\text{ cubic kilometers}\) of methane), the warm top layer of water never cools enough to sink (meromictic stratification).
2. Hydrostatic pressure traps the gas: At a depth of \(200\text{ to }400\text{ meters}\) (\(650\text{ to }1,300\text{ feet}\)), the immense weight of the upper water column (\(20\text{ to }40\text{ atmospheres}\) of pressure) keeps billions of liters of \(CO_2\) dissolved inside the cold bottom water, exactly like the cap on a pressurized bottle of champagne.
3. The Trigger and Runaway Exsolution: When a rockslide/landslide splashes into the lake, an earthquake shakes the basin, a sublacustrine volcanic vent heats the bottom, or a cold heavy rainstorm pushes surface water down, a parcel of deep \(CO_2\)-saturated water is lifted upward into shallower, lower-pressure zones. Instantly, microscopic bubbles of \(CO_2\) fizz out of solution (nucleation). Because gas-filled water is lighter (more buoyant) than liquid water, the fizzing column shoots toward the surface like an elevator, drawing up the entire deep layer of the lake in a runaway chain reaction that blasts a 50-to-100-meter-high fountain of water into the air and unleashes a massive, freezing-cold blanket of heavier-than-air \(CO_2\).

"Mazuku" (Swahili for "Evil Wind") and Dry Volcanic \(CO_2\) Traps Worldwide¶

You do not need a lake to be killed by volcanic \(CO_2\). Around Mount Nyiragongo (DR Congo), Mammoth Mountain (California, USA), Campi Flegrei / Solfatara and Mount Etna (Italy), Laacher See (Germany), Mount Gambier (Australia), Hakoné / Mount Aso (Japan), and Rotorua (New Zealand), invisible cold \(CO_2\) seeps straight out of soil fractures: - In East Africa, locals call these depressions Mazuku ("Evil Winds"): during the day, solar heat and wind disperse the gas, but at night, when the air cools and wind stops, pure \(CO_2\) fills sunken footpaths, caves, trenches, and low huts up to chest height. - In snowy volcanic mountains like Mammoth Mountain in California or Mount Rainier / Mount Hood / Japanese Alps, \(CO_2\) and \(H_2S\) accumulate underneath the winter snowpack and fill tree wells, snow caves, ski patrol huts, and buried cabin basements, suffocating skiers who fall headfirst into a tree well or dig a snow shelter near a fumarole.

Deep dive 2: Coastal "Laze" (Hydrochloric acid lava haze) vs. inland "Vog" (Volcanic smog)¶

Travelers and coastal residents in volcanic islands (such as Hawaii's Kīlauea, Iceland's Reykjanes Peninsula, La Palma in the Canary Islands, Stromboli/Etna in Italy, and Vanuatu/Indonesia) frequently confuse Laze and Vog:

1. How Coastal "Laze" (Lava Haze) Forms and Why It Is Not Steam¶

When incandescent basaltic lava at \(1,150^\circ\text{C}\) (\(2,100^\circ\text{F}\)) pours off a sea cliff into ocean seawater, it does not merely create harmless water steam. The extreme thermal shock triggers rapid chemical reactions (pyrohydrolysis) between molten silicate lava and dissolved magnesium chloride (\(MgCl_2\)) and sodium chloride (\(NaCl\)) sea salts, boiling off a dense, brilliant-white plume of concentrated hydrochloric acid (\(HCl\)) gas and acid rain droplets with a \(\text{pH of }1.5\text{ to }2.0\) (as corrosive as battery acid or pure stomach acid). - At the exact same moment, steam explosions shatter the chilling crust of molten lava into millions of microscopic, needle-sharp volcanic glass shards (including fragile spun-glass threads called Pele's hair and hollow glass flakes called limu o Pele). - Why you must NEVER rub your eyes in a laze plume: If a sea breeze shifts and blows the white laze plume over sightseers or a tour boat, the hydrochloric acid stings the eyes immediately, prompting people to rub their eyes with their hands. Rubbing grinds microscopic volcanic glass needles straight into the cornea, causing severe corneal ulcerations. Instead, flush the eyes continuously with pouring clean water or saline for 15 minutes before touching the eyelids.

2. How Inland "Vog" (Volcanic Smog) Triggers Life-Threatening Asthma Crises¶

Vog forms when sulfur dioxide (\(SO_2\)) gas emitted from a volcanic vent reacts chemically in the atmosphere with oxygen, moisture, and sunlight over hours to days, converting into a hazy aerosol mist of sulfuric acid (\(H_2SO_4\)) droplets and microscopic ammonium sulfate particles (\(PM_{2.5}\), smaller than \(2.5\text{ micrometers}\)). - Because \(PM_{2.5}\) acid sulfate particles are microscopic, they bypass the nose's natural filtration system and penetrate straight into the deepest alveoli and bronchioles of the lungs. - In people with asthma, COPD, chronic bronchitis, heart disease, infants, and pregnant women, even low concentrations of \(SO_2\) (\(0.5\text{ to }5\text{ ppm}\)) and vog trigger immediate, violent reflex bronchoconstriction (airway clamping shut). - Indoor Shelter-in-Place Protocol for Vog / \(SO_2\): If a heavy vog or \(SO_2\) plume blows over your neighborhood and you cannot evacuate crosswind, go indoors, close and tape all windows and doors, set your air conditioner to Recirculate / Indoor Air (closing the outside fresh-air damper), run a HEPA air purifier equipped with an activated carbon / potassium permanganate or baking-soda chemical filter, or hang damp sheets sprayed with a solution of baking soda and water (\(2\text{ tablespoons}\) baking soda per liter of water) in front of a box fan to scrub acid aerosols from the room air.

Concentration-by-concentration physiological thresholds for \(CO_2\), \(H_2S\), and \(SO_2\)¶

Understanding how rapidly symptoms escalate as gas concentrations climb explains why waiting even 60 seconds in a volcanic depression can be fatal (data compiled from NIOSH, OSHA, and USGS Volcano Hazards Program):

Protecting drinking water, livestock, and skin from Hydrogen Fluoride (\(HF\)) and acid rain¶

When an active volcano degasses or erupts fine ash, hydrogen fluoride (\(HF\)) and sulfur dioxide (\(SO_2\)) condense onto falling ash particles and rain droplets: 1. Disconnect Rooftop Rainwater Cisterns Immediately: If your household relies on rooftop rainwater harvesting tanks, disconnect the gutter downspouts from your storage tank before the gas or ash plume arrives. Acid rain and fluoride-coated ash washed off a roof can turn cistern water toxic (causing acute fluoride poisoning, severe vomiting, and hypocalcemic cardiac arrhythmias). 2. Protect Livestock and Pets: Grazing animals (especially sheep, cattle, horses, and goats) ingest toxic doses of fluorine when eating grass dusted with \(HF\)-coated volcanic ash or drinking from shallow puddles, developing fatal acute fluorosis within hours. Bring livestock into covered barns and feed them stored clean hay and covered water.

Freygy-ýygydan berilýän soraglar¶

Çeşmeler barlandy¶

• United States Geological Survey (USGS) Volcano Hazards Program: Volcanic Gases and Their Effects (\(CO_2\), \(SO_2\), \(H_2S\), \(HF\), and Coastal Hydrochloric Acid Laze), including Mammoth Mountain Tree-Well/Snow-Pit \(CO_2\) Hazard Advisories and Kīlauea Vog/Laze Protocols.
• International Volcanic Health Hazard Network (IVHHN), World Health Organization (WHO), and British Geological Survey (BGS): Guidelines on Preparedness Before, During, and After Exposure to Volcanic Gas, Acid Rain, Vog, and Laze.
• Centers for Disease Control and Prevention (CDC / NIOSH, United States) and Occupational Safety and Health Administration (OSHA, United States): Immediately Dangerous to Life or Health (IDLH) Concentrations and Pocket Guide to Chemical Hazards for Carbon Dioxide (\(CO_2\)), Hydrogen Sulfide (\(H_2S\)), Sulfur Dioxide (\(SO_2\)), Hydrogen Chloride (\(HCl\)), and Hydrogen Fluoride (\(HF\)).
• United Nations Office for the Coordination of Humanitarian Affairs (OCHA) and Goma Volcano Observatory (OVG): Mazuku (Dry Carbon Dioxide Pocket) and Lake Kivu / Lake Nyos Limnic Eruption Early Warning and High-Ground Evacuation Standards.

Degişli gollanmalar¶

• Volcanoes: ashfall, pyroclastic flows, and lahars
• Wildfire smoke and ash inhalation
• Asthma attack emergency first aid
• Eye injuries and chemical flushing
• CPR: cardiopulmonary resuscitation steps