The skin squeeze effect in diving

Written by Jakob Jelling


Skin squeeze is one ofrepparttar barotrauma problems which divers can suffer due torepparttar 132947 pressure factors involved inrepparttar 132948 practice ofrepparttar 132949 sport. This way, a barotrauma can be caused due torepparttar 132950 differences betweenrepparttar 132951 pressure ofrepparttar 132952 water andrepparttar 132953 surface pressure to whichrepparttar 132954 diver's body is adequate and used to. Barotraumas include problems such as external, inner and middle ear squeeze, eye squeeze, skin squeeze, sinus squeeze and lung squeeze.

While being intorepparttar 132955 water, a diver is in a heavier environment than when he is inrepparttar 132956 surface due torepparttar 132957 fact that water is a denser medium than air. The relationship betweenrepparttar 132958 density ofrepparttar 132959 environment, its pressure andrepparttar 132960 way it affectsrepparttar 132961 human body are explained through several physic laws, among which we can specifically find Boyle's law, Dalton's law and Henry's law.

These physic laws explain that there is a constant relationship amongrepparttar 132962 volume andrepparttar 132963 pressure multiplication. This way, it explains thatrepparttar 132964 way in whichrepparttar 132965 deeper a diver goes intorepparttar 132966 water,repparttar 132967 more pressure he will be exposed to. Therefore, whenever they wish to go deep intorepparttar 132968 water, divers should have this law in mind and takerepparttar 132969 precautions necessary to avoidrepparttar 132970 effects which this pressure increase can have on them.

Fishing the Dropper Fly

Written by Cameron Larsen


Overrepparttar past decade or so, some fly fishers have hailedrepparttar 132946 dropper system asrepparttar 132947 latest and greatest thing to hit fly fishing sincerepparttar 132948 graphite fly rod. The truth isrepparttar 132949 two fly dropper system has been around since fly fishing began. Like all techniques it has gone in and out of style overrepparttar 132950 generations. As new technologies are developed, fly fishing trends change, some things are labeled obsolete only to experience a re-birth later on. For whatever reasonrepparttar 132951 dropper fly has experienced just such a re-birth and its uses are becoming more varied as well.

The two fly dropper system is simply a way to fish two flies at one time, actually a fly fisher could fish more than two flies, but for this article we will stick to just two flies. The advantages of fishing two flies can be many. You can more quickly identifyrepparttar 132952 'hot fly', if fish hit one fly repeatedly you can eliminaterepparttar 132953 dropper fly. Another advantage is your ability to search through multiple levels inrepparttar 132954 water column. The theory goes that findingrepparttar 132955 depth where fish are holding will increase your chances of getting hits. Depending onrepparttar 132956 food sources immediately available, fish can be holding down atrepparttar 132957 bottom, or swirling nearrepparttar 132958 surface, a dropper allows you to explore these possibilities.

Dropper Techniques

There are two basic dropper combinations. One isrepparttar 132959 sinker/sinker combo, andrepparttar 132960 other isrepparttar 132961 dry fly/dropper, sometimes calledrepparttar 132962 hopper/dropper as hopper patterns work very well for this. Inrepparttar 132963 sinker/sinker combo, two sub-surface patterns, are used, usually combined with split shot weights.

There are two trains of thought inrepparttar 132964 sinker/sinker combo. One is you attachrepparttar 132965 smaller fly first inrepparttar 132966 sequence and then attachrepparttar 132967 larger fly, such as a stonefly nymph and attach a split shot in betweenrepparttar 132968 flies. The idea here is thatrepparttar 132969 smaller fly, perhaps an emerger pattern, will stay inrepparttar 132970 upper portion ofrepparttar 132971 water column whilerepparttar 132972 stonefly will sink down, towardsrepparttar 132973 bottom, whererepparttar 132974 fish is most apt to strike them.

Others (including yours truly) takerepparttar 132975 opposite approach. Attachrepparttar 132976 bigger fly first, take that Stonefly nymph for example, putrepparttar 132977 weight above it, and then attach your emerger pattern. The idea is thatrepparttar 132978 Stonefly nymph will sink torepparttar 132979 bottom, and drift in its proper element. And dangling freely behind and above it will be your emerger or whatever smaller nymph you would like. Personally I have had great success with this rigging, although I must say I don't userepparttar 132980 previously mentioned one very often.

Cont'd on page 2 ==>
 
ImproveHomeLife.com © 2005
Terms of Use