Thursday, 29 August 2013

ROCK CLIMBING



Rock climbing is an activity in which participants climb up, down or across natural rock formations or artificial rock walls. The goal is to reach the summit of a formation or the endpoint of a pre-defined route without falling. To successfully complete a climb, one must return to base safely, due to the length and extended endurance required accidents are more likely to happen on decent than ascent, especially on the larger multiple pitches (class III- IV and /or multi-day grades IV-VI climbs). Rock climbing competitions have the objectives of either completing the route in the quickest possible time or attaining the farthest point on an increasingly difficult route. Scrambling, another activity involving the scaling of hills and similar formations, is similar to rock climbing. However, rock climbing is generally differentiated by its sustained use of hands to support the climber's weight as well as to provide balance.
Rock climbing is a physically and mentally demanding sport, one that often tests a climber's strength, endurance, agility and balance along with mental control. It can be a dangerous sport and knowledge of proper climbing techniques and usage of specialised climbing equipment is crucial for the safe completion of routes. Because of the wide range and variety of rock formations around the world, rock climbing has been separated into several different styles and sub-disciplines.[1] While not an Olympic event, rock climbing is recognized by the International Olympic Committee as a sport.



Style

In How to Rock Climb, John Long notes that for moderately skilled climbers simply getting to top of a route is not enough, how one gets to the top matters.In rock climbing, style refers to the method of ascending the cliff. There are three main styles of climbing: on-sight, flash, and redpoint. To on-sight a route is to ascend the wall without aid or any foreknowledge. It is considered the way to climb with the most style. Flashing is similar to on-sighting, except that the climber has previous information about the route including talking about the beta with other climbers. Redpointing means to make a free ascent of the route after having first tried it.




Types of Rock climbing

Most of the climbing done in modern times is considered free climbing—climbing using one's own physical strength, with equipment used solely as protection and not as support—as opposed to aid climbing, the gear-dependent form of climbing that was dominant in the sport's earlier days. Free climbing is typically divided into several styles that differ from one another depending on the choice of equipment used and the configurations of their belay, rope and anchor systems.
As routes get higher off the ground, the increased risk of life-threatening injuries necessitates additional safety measures. A variety of specialized climbing techniques and climbing equipment exists to provide that safety. Climbers will usually work in pairs and utilize a system of ropes and anchors designed to catch falls. Ropes and anchors can be configured differently to suit many styles of climbing, and roped climbing is thus divided into further sub-types that vary based on how their belay systems are set up. Generally speaking, beginners will start with top roping and/or easy bouldering and work their way up to lead climbing and beyond.

Aid climbing

Still the most popular method of climbing big walls, aid climbers make progress up a wall by repeatedly placing and weighting gear which is used directly to aid ascent and enhance safety.

Free climbing

The most commonly used method to ascend climbs refers to climbs where the climber's own physical strength and skill are relied on to accomplish the climb. Free climbing may rely on top rope belay systems, or on lead climbing to establish protection and the belay stations. Anchors, ropes and protection are used to back up the climber and are passive as opposed to active ascending aids. Subtypes of free climbing are trad climbing and sport climbing. Free climbing is generally done as "clean lead" meaning no pitons or pins are used as protection.[7]



CLIMBING EQUIPMENT




Rock-Climbing Equipment 

 A wide range of equipment is used during rock climbing. The most popular types of climbing equipment are briefly described in this article. The article on protecting a climb describes equipment commonly used to protect a climber against the consequences of a fall.

 

 

Rope, cord and webbing 

 

Climbing ropes are typically of kernmantle construction, consisting of a core (kern) of long twisted fibres and an outer sheath (mantle) of woven coloured fibres. The core provides about 80% of the tensile strength, while the sheath is a durable layer that protects the core and gives the rope desirable handling characteristics.
Ropes used for climbing can be divided into two classes: dynamic ropes and low elongation ropes (sometimes called "static" ropes). Dynamic ropes are designed to absorb the energy of a falling climber, and are usually used as Belaying ropes. When a climber falls, the rope stretches, reducing the maximum force experienced by the climber, their belayer, and equipment. Low elongation ropes stretch much less, and are usually used in anchoring systems. They are also used for abseiling (rappeling) and as fixed ropes climbed with ascenders.

Carabiners 


Carabiners are metal loops with spring-loaded gates (openings), used as connectors. Once made primarily from steel, almost all carabiners for recreational climbing are made from a light weight aluminum alloy. Steel carabiners are much heavier, but harder wearing, and therefore are often used by instructors when working with groups.



Harnesses

 

A harness is a system used for connecting the rope to the climber. There are two loops at the front of the harness where the climber ties into the rope at the working end using a figure-eight knot. Most harnesses used in climbing are preconstructed and are worn around the pelvis and hips, although other types are used occasionally.
Different types of climbing warrant particular features for harnesses. Sport climbers typically use minimalistic harnesses, some with sewn-on gear loops. Alpine climbers often choose lightweight harnesses, perhaps with detachable leg loops. Big Wall climbers generally prefer padded waist belts and leg loops. There are also full body harnesses for children, whose pelvises may be too narrow to support a standard harness safely. These harnesses prevent children from falling even when inverted, and are either manufactured for children or constructed out of webbing. Some climbers use full body harnesses when there is a chance of inverting, or when carrying a heavy bag. There are also chest harnesses, which are used only in combination with a sit harness; this combination provides the same advantages as a full body harness. However, test results from UIAA show that chest harnesses can put more impact on the neck than sit harnesses, making them slightly more dangerous to use.


Helmet

The climbing helmet is a piece of safety equipment that primarily protects the skull against falling debris (such as rocks or dropped pieces of protection) and impact forces during a fall. For example, if a lead climber allows the rope to wrap behind an ankle, a fall can flip the climber over and consequently impact the back of the head. Furthermore, any effects of pendulum from a fall that have not been compensated for by the belayer may also result in head injury to the climber. The risk of head injury to a falling climber can be further significantly mitigated by falling correctly.
Climbers may decide whether to wear a helmet based on a number of factors such as the type of climb being attempted, concerns about weight, reductions in agility, added encumbrances, or simple vanity. Additionally, there is less incentive to wear a helmet in artificial climbing environments like indoor climbing walls (where routes and holds are regularly maintained) than on natural multi-pitch routes or ice climbing routes (where falling rocks and/or ice are likely).

Climbing shoes



Specifically designed foot wear is usually worn for climbing. To increase the grip of the foot on a climbing wall or rock face due to friction, the shoe is covered with a vulcanized rubber layer. Usually, shoes are only a few millimetres thick and fit very snugly around the foot. Stiffer shoes are used for "edging", more compliant ones for "smearing". Some have foam padding on the heel to make descents and rappels more comfortable. Climbing shoes can be re-soled which decreases the cost of purchasing new shoes.

 

 

 

ICE CLIMBING

 

Ice climbing

Eisklettern kl engstligenfall.jpg  

 









Ice climbing is the activity of ascending inclined ice formations. Usually, ice climbing refers to roped and protected climbing of features such as icefalls, frozen waterfalls, and cliffs and rock slabs covered with ice refrozen from flows of water. For the purposes of climbing, ice can be broadly divided into two spheres, alpine ice and water ice. Alpine ice is found in a mountain environment, usually requires an approach to reach, and is often climbed in an attempt to summit a mountain. Water ice is usually found on a cliff or other outcropping beneath water flows. Alpine ice is frozen precipitation whereas water ice is a frozen liquid flow of water. Most alpine ice is generally one component of a longer route and often less technical, having more in common with standard glacier travel, while water ice is selected largely for its technical challenge. Technical grade is, however, independent of ice type and both types of ice vary greatly in consistency according to weather conditions. Ice can be soft, hard, brittle or tough. Mixed climbing is when ascending involves both ice climbing and Rock climbing.

Techniques

A climber chooses equipment according to the slope and texture of the ice. For example, on flat ice, almost any good hiking or mountaineering boot will usually suffice, but for serious ice climbing double plastic mountaineering boots or their stiff leather equivalent are usually used, which must be crampon compatible and stiff enough to support the climber and maintain ankle support. On short, low angled slopes, one can use an ice axe to chop steps. For longer and steeper slopes or glacier travel, crampons are mandatory for a safe climb. Vertical ice climbing is done with crampons and ice axes (those specific to vertical ice generally being called technical ice axes, or ice tools; climbers kick their legs to engage the front points of the crampons in the ice, and then swing the axe into the ice above their heads. This technique is known as front pointing. The strength of the ice is often surprising; even if the axe goes in only a centimeter or so it is enough to pull up on. If a climber is leading, they will need to place ice screws as protection on the way up (see climbing system). Most mountaineers would only consider the last scenario true ice climbing; the less steep variations are routine aspects of winter mountaineering.

Rope systems



Top-roping.
Single, double, and twin rope are the three main rope systems used in ice climbing. The single rope system, which is suited for straight climbing routes, is the most commonly used rock climbing system in the world. Also often used in climbing is the double rope system which is a more flexible system than the single rope system. Lastly, the twin rope system, which uses two twin ropes in a single rope system, is used for longer multi-pitch routes. Double and twin rope technique is used more frequently in ice climbing because these systems are more redundant, an important consideration given the number of sharp edges the ice climber carries with him. Impact force on ice is an issue, with double ropes gaining popularity over twins.[4]

Tying in

Tying in entails attaching your rope to the climbing harness. This technique is a must particularly when leading a climb or belaying. A commonly used tie-in knot is the Figure-of-eight follow through, but the Bowline and Thumb (stopper) knot is often preferred, since it is easier to untie when frozen. After the initial knot is tied, a safe and reassuring practice of tying a fisherman's knot as a back up is recommended. It is good to keep the knots close to the harness and together as one system. Once you tie-in, you will create a belay loop which will contain your belay device when needed. This technique should be done properly to ensure your safety when ice climbing.

Belaying

In this climbing technique, either running belays or fixed belays are used. A running belay on ice is similar to a running belay on rock as well as snow. The leader of the climb puts protection and clips the rope through it. The next climber puts away the protection. There should be at least two points of protection between the leader and the next climber. Fixed belays, on the other hand, require a belayer, belay anchor, and points of protection. A belay anchor is attached to a cliff in supporting a belay or toprope. In using either a running- or fixed belay, it is necessary that you have enough knowledge on boot/ice-screw belay techniques.

HIKING

Hiking



Hiking is an outdoor activity which consists of walking in natural environments, often in mountainous or other scenic terrain. People often hike on hiking trails. It is such a popular activity that there are numerous hiking organizations worldwide. Studies have confirmed the health benefits of different types of hiking, including losing excess weight, decreasing hypertension, and improving mental health. The word hiking is understood in all English-speaking countries, but there are differences in usage.

Equipment

A simple dry magnetic pocket compass
 
The equipment required for hiking depends on the length of the hike. Hikers generally carry water, food, and a map in a backpack.Hikers often wear hiking boots to protect their feet from rough terrain.Some outdoor organizations, such as The Mountaineers strongly advocate a list of equipment for hiking, such as the Ten Essentials. This list includes items such as a compass, sunglasses, sunscreen, clothes, a flashlight, a first aid kit, a fire starter, and a knife.Other sources suggest additional items such as insect repellent and an emergency blanket. Nowadays a GPS navigation device is very helpful especially in weather conditions with low visibility or when hiking in unknown territories.

Etiquette of hiking

Hiking in a group increases safety, but hikers may wish to hike at different rates.
Hiking in Argentina.
Because hiking is a recreational experience, hikers expect it to be pleasant. Sometimes hikers can interfere with each other's enjoyment, or that of other users of the land. Hiking etiquette has developed to minimize such interference. For example:
  • When two groups of hikers meet on a steep trail, there may be contention for use of the trail. To avoid conflict, a custom has developed in some areas whereby the group moving uphill has the right-of-way.
  • Being forced to hike much faster or slower than one's natural pace can be annoying, and difficult to maintain consistently. More seriously, walking unnaturally fast dramatically increases fatigue and exhaustion, and may cause injury. If a group splits between fast and slow hikers, the slow hikers may be left behind or become lost. A common custom is to encourage the slowest hiker to hike in the lead and have everyone match that speed. Another custom is to have experienced hiker(s) sweep up the rear on a rota, to ensure that everyone in the group is safe and nobody straggles.
  • Hikers generally enjoy the peace of their natural surroundings. Loud sounds such as shouting or loud conversation, or the use of mobile phones, disrupt this enjoyment. However making noise is considered a necessary safety precaution in many areas home to large wild animals, especially predators such as bears.
  • To keep nature beautiful, it is important that no traces are left. Besides the obvious, such as bringing back all trash, leaving no traces also comprises taking care not to unnecessarily break plants or disturbing wildlife.

Hazards

A Canadian hiking trail marker

Hiking may produce threats to personal safety. These threats can be dangerous circumstances while hiking and/or specific accidents or ailments. Diarrhea has been found to be one of the most common illness afflicting long-distance hikers in the United States.

Symbols used in trail blazing
Noxious plants that cause rashes can be particularly bothersome to hikers. Such plants include poison oak, poison ivy, poison sumac, and stinging nettles.
Dangerous hiking circumstances include losing the way, inclement weather, hazardous terrain, or exacerbation of pre-existing medical conditions. Specific accidents include metabolic imbalances (such as dehydration or hypothermia), topical injuries (such as frostbite or sunburn), attacks by animals, or internal injuries (such as ankle sprain).
Attacks by humans are also a reality in some places. There are organizations that promote prevention, self-defense and escape.Cell phone and GPS devices are used by some organizations.
In various countries, borders may be poorly marked. It is good practice to know where international borders are. For example, in 2009, Iran seized three American hikers for crossing over the Iran-Iraq border while hiking. Many nations, such as Finland, have specific rules governing hiking across borders.

Wednesday, 28 August 2013

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