Tech Tip 02: Dress for Success

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来自 University of Alberta 的课程

Mountains 101

593 个评分

University of Alberta

Mountains 101

593 个评分

Mountains 101 is a broad and integrated overview of the mountain world. This 12-lesson course covers an interdisciplinary field of study focusing on the physical, biological, and human dimensions of mountain places in Alberta, Canada, and around the world. Specifically, we'll study the geological origins of mountains, how they’re built-up and worn-down over time; we’ll learn about their importance for biodiversity and water cycles, globally and locally; we’ll explore their cultural significance to societies around the globe, and how that relationship has evolved over time; and we’ll learn how mountains are used, how they’re protected, and how today they’re experiencing rapid change in a warming climate. At the end of each lesson, Mountains 101 will also provide learners with some smart tricks -- Tech Tips -- to safely enjoy time in the high alpine environment: from how to pick the best footwear for hiking to making smart decisions in avalanche terrain. We’ll be delivering your online lessons from valley bottoms to mountaintops, from museums and labs, to alpine huts and other spectacular alpine sites, and we’ll do so with the help of a whole host of experts. We invite you to join us for this online adventure! The mountains are calling...

从本节课中

Lesson 2: Origins

In Lesson 2, we discuss why mountains are located where they are. How did they get there? We’ll explore the physical origins of mountains, theories of mountain building, and how our changing ideas about mountains and their genesis have shaped our engagement with them. TechTip: Dress for success

2.1 Mountains & Deep Time19:36

2.2 Current Theories of Mountain Building6:27

2.3 Types of Mountains9:48

2.4 Conclusion6:23

Tech Tip 02: Dress for Success3:53

与讲师见面

Zac Robinson
Associate Professor
Physical Education & Recreation
David Hik
Professor
Biological Sciences

[MUSIC]

Mountain weather is unpredictable.

This means we need to be ready for anything that mother nature throws at us.

The goal is to hope for the best but to plan for the worst.

So let's chat about clothing.

The first layer I wear is a wicking layer and

its purpose is to keep you warm and dry.

Any sweat that I produce needs to be carried away from my skin so

that moisture doesn't stick around making you cold when activity stops.

There are many different brands and materials for

this inner layer, including both synthetics, such as polyester and

polyester blends, and natural materials, such as Merino wool.

What you choose comes down to personal preference.

But make sure you wear a weight that isn't too heavy,

as your rate of perspiration during high activity may

overwhelm the clothing's ability to wick away the moisture, rendering it useless.

The next layer is your insulation.

Stick with synthetic fibers.

This layer would trap warm air within its structure.

And keeps you comfortable.

I really like having a mid-layer vest.

As this keeps my arms free for use but maintains warmth around my core.

Another single piece that is worth its weight in gold, is a warm overlayer.

In summertime, that may be a super light, down filled pullover.

In winter, a full coverage synthetic parka may be more suitable.

All I know, is that whenever I stop to take a break, be it summer, winter,

skiing, climbing, when I open my pack, the first thing to come out is my warm coat.

Warm insulating jackets are typically filled with either down feathers or

synthetic materials.

Here are differences.

Down is more efficient, it's lighter, but it's usually on the more expensive side.

The other downside to down is that if it gets wet,

it loses its ability to retain heat, rendering it useless.

Synthetic fills, conversely, can get wet.

So they're typically better for

moister climates and unpredictable weather conditions.

They're also quite robust for adverse conditions.

The downside to synthetic fill is its weight in comparison to down.

Synthetic fill is heavier.

These are important considerations to think about not only for

insulating jackets, but for sleeping bags too.

Whatever the activity, there's always an extra warm layer in my pack.

The outermost layer is your weather protection.

On day trips where you have confidence in the weather forecast, I sometimes choose

to carry no extra protection for my lower body, and some kind of light, upper layer.

But if I have any question at all, or

on a longer trip I ensure that I have full storm protection both top and bottom.

For me, that means three layer Gore-Tex as this is the most packable storm proof

shell clothing available to most people.

I choose super light pants with zippers down the side so

I can put them on over my boots.

I also pick super light jackets with minimal pockets, vents, and zippers.

The way I look at it, I'm wearing Gore-Tex when it's really miserable.

So the last thing I want is extra holes or

zippers in the garments that will allow the bad weather to get in.

Simple is good for this layer.

Since you will hopefully carry it way more than you'll wear it.

One of the most amazing recent advances in clothing is a variety of softshell

garments.

They're almost waterproof, mostly windproof,

with excellent abrasion resistance.

This makes these clothes great for your third layer in 95% of conditions.

That allows me to wear the real storm clothes less.

And that's a great thing, because although full storm layers are breathable,

they're not breathable enough for high output activity.

Certainly necessary when the weather goes completely sideways, but

not my go-to jacket.

[MUSIC]

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