104 lines
2.8 KiB
Plaintext
104 lines
2.8 KiB
Plaintext
so rhai erop yields are hlghes| duwnwmd lmm
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windbreak areas. wnerever snow blows aeroirs rhe
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iandseape, windbreaks oi savannah zunliguralians
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ereaie springso inoishire «aps ii is also pronble iodo
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ihis by using open swales in snew-drrn areas
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Wlndbreaks in exposzd snowiield areas ean be better
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esraohshed in ihe lee or eanh bonds :1! in naioral
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eorniee hisi polewards ol ndgei.
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CROP YIELDS vary in inerease irorn ihe 1mm
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increase In sireh ereps as avoudo ro ml in eorri,
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60-70% in allalia, was in wheai and lesser gains
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(Him ror low Crops sneh as lemiee All rhese
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inereases lailow wlndbmak esiaolishrnehi on exposed
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sires Elieeis are oi eenrse less in narnraliy sneirered
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siriiarions or areas ei nurmally low Wind speed
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However, niinosi all normal garden vegelahies
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ieneoroii, lumam. polaioi benehi greaily lmm Wind
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sheiier For lhis reason, a yawn! panern similar in rhai
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in figure no is ieeernrneiided lor sneh erops and
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wmdriflecud pasnires
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mun: 5.2- I I I
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LUWLEGUMINGUS wwnanux m CROP
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m spiral lea-um alum a minimal harm. oaui ii aim pmviaes
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u: m""" ré'ss
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rililm: 5.11
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HURNCANES on CYCLONES
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Rim aim Inmnll. nail salons ai- mvsi wm: la iris wkwlm noes
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01 he lawn/Esau all as isinpniliioadiio arernmaisd or [hum]
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hull!
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averysnuiaiedemoernimnmi ioraiiwind autumn;
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HURRICANB (mamas, TYPHOONS)
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Very sraole and sllllwan ulms near line eqnaror may
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prediiee iieree npdranghis 0! air ovzr warin oeeanie
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[30
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areas, whldl over some days or weeks build up ro ine
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greal rising spirals ol humeanes A: ihese move slowly
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lusually ai 24—32 kin/hi iavss ihe oeeari (awards land,
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Wind speeds aronnd ihe vortex ean reaeh 125491
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kin/ii, while wimln rhe vonex iisell a ‘ndal hulge‘ rises
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up lo 2,7 rn 19 leer) above sea level (Figure 511:, ihis
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warer oulge causes a lidal surge ai roasllines
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Voriiees revolve imirdockwlsn iii lho norihern
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hennsphere, dockwlse in ihe souihem, and inns coasral
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areas in ine nonh side have ihe highrfl wnier and wave
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levels in ihe norlhern heonsphere, and lo lhe small. side
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in ihe sourhern the eornliined elloeis of npldly
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{luduahng pressures, iidal bulge, wave and sea
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pllrup, and wave backwash ereare dcvlslilwn on
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masis Alihoirgh hnrrieanes eannoi persisi iar inland,
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as ihe sea resell sultan-s ihe earner, lhe inlense nms
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generaied do reach well inland |0 nood rivers and
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esiiinries, adding io the general desirueiion Wllh all
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erleers eolnblned in a "worst case“ oi high lides and
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prior rains, dtshudivz wave ariaek ean reaeh ens rn
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mun leeii ibuve nornial highrnde wave levels.
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As wind srrengih inereases at sea, wi Length also
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inmzses, so ihal norrnai wave minis arri ne al a per
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minnie m eaiiri Adam): candllions slow down la a
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irorrn Irequenry ul 5 per niiniile beloie year wrnds
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mese wider—spaced waves liavel list, are larger, and
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male severe backwash undermining or shorelines.
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