Tuesday, June 30, 2009

Robinson Crusoe Island CL - When This Old World is Getting You Down or Two Other Maps

Robinson Crusoe Island - Wagner IV World

Robinson Crusoe Island CL


Robinson Crusoe Island - Landsat ETM+ S-17-30_2000 (1-85,000)

Robinson Crusoe Island - Landsat ETM+ S-17-30_2000 (1:85,000)


Robinson Crusoe Island - DigitalGlobe Image from Google Earth

Robinson Crusoe Island - DigitalGlobe Image from Google Earth (1:85,000)


Robinson Crusoe Island - EVS Precision Map (1-85,000)

Robinson Crusoe Island - EVS Precision Map (1:85,000)

When This Old World is Getting You Down

At times we all wish we could pull a "Robinson Crusoe", find some forgotten spot, seldom visited, yet replete with all the necessities of life - food, water, clothing and shelter. A place without financial pressures, martial woes, busy urban scene and no threat of crime spilling into our fragile lives. I'm not sure that place exists. Alexander Selkirk, the individual Daniel Defoe based his Robinson Crusoe character on, was so lonely by the end of his four year exile, he gladly rejoined the crew of the individuals who had originally abandoned him. His life on previously uninhabited Isla Mas a Tierra was often wretched. His diet was life sustaining, but challenging to gather. His clothing was handmade and unkept. His shelter is reputed to be a cave. He spent many lonely hours at his lookout scanning the horizon for a ship that might rescue him.

With that said, we still wish we could escape to his place. We all know in our heart of hearts we would do better. We would not grow lonely, but using our 21st century knowledge and preplanning, our island life would be a special time to reflect on the world and all of its mysteries and how we fit into them. When we grow tired of our adventure, we would merely dial our satellite phone and be whisked away, back to our previous lives.


Rob-cru

Robinson Crusoe Island - Wikimedia Commons


Mapa

Robinson Crusoe Island - Source Unknown (1:120,000)

Two Other Maps

A map is seldom an entirely unique creation. Robinson Crusoe Island has been mapped many times. Some of these are excellent compositions. I used two other maps to aid in the construction of my map. The first one, found in the Wikipedia article on Robinson Crusoe Island was used to gather feature names. The second map, source unknown, was used to confirm certain feature names and supply any new ones not found on the first "helper" map.

The vector files making up my EVS precision map were created using Landsat ETM+ and DigitalGlobe from Google Earth. The majority of the shoreline was extracted from DigitalGlobe imagery. Where clouds obscured the land, I used Landsat to map the underlying area. The 50-meter contours were derived from SRTM data. There is a problem with the elevations, some of the higher elevations are dramatically different than what they should be. El Yunque Peak is supposed to be 913-meters, but is shown to be approximately 650-meters using SRTM data. I did not correct the erroneous elevations in this version of my map. Perhaps, I'll correct them later.


5410

Robinson Crusoe Island - Chilean Nautical Chart 5410 (1:50,000)

Finally, for all of you sailors that wish to explore Robinson Crusoe Island, the Chilean Hydrographic Office (SHOA) has a nautical chart you might wish to purchase. The above image is a copy of it.

Enjoy!

Thursday, June 18, 2009

Thoughts - How Many Uninhabited Islands in the World?

First one must define island. According to the United Nations Convention on the Law of the Sea Part VIII:



1. An island is a naturally formed area of land, surrounded by water, which is above water at high tide.


2. Except as provided for in paragraph 3, the territorial sea, the contiguous zone, the exclusive economic zone and the continental shelf of an island are determined in accordance with the provisions of this Convention applicable to other land territory.


3. Rocks which cannot sustain human habitation or economic life of their own shall have no exclusive economic zone or continental shelf.


Now how about nations with lots of islands? Let's list those: Sweden 221,800; Finland 179,584; Canada 53,000; Norway 50,000; Indonesia 17,504; Philippines 7,107; Greece 6,000; Japan 3,000 and Maldives 2,000. In just these nine island rich countries, over 500,000 islands are accounted for. Now for the good news for all of you folks that want to find your own uninhabited island. That place where you can get away from all of the worries of the world - an uninhabited island. Of the 500,000 islands located in these nine countries, only 11, 000 (2%) have a permanent population. That leaves 539,000 (98%) mostly very small islands that have zero population. So take heart all of you Robinson Crusoes, there is an uninhabited island just waiting for you to claim it.


Enjoy!

Wakhjir Valley & Pass AF - Marco Polo Sheep, Silk Road & A Lengthy Mapping Project

Wagner IV World

Wakhjir Valley & Pass AF


Wakhjir Valley and Pass - EVS Precision Map N-43-35-2000 from Landsat ETM+ N-43-35-2000 (1-100,000)

Wakhjir Valley and Pass - EVS Precision Map N-43-35-2000 from Landsat ETM+ N-43-35-2000 (1-100,000)

This map is the culmination of over two weeks of digitizing glaciers, meandering streams, high mountain meadows and many hours of research. During the researching phase I learned about the Great Game, Marco Polo sheep and the Hindu Kush, Pamir, Karakoram mountain ranges. I learned that this valley is an offshoot of the primary valley, the Wakhan that slices between the Pamirs to the north and the Hindu Kush to the south. At the Wakhan's eastern terminus, one could head into the Wakhjir valley and cross over the Wakhjir Pass into China or one could continue east to northeast into Tajikistan and eventually into China. I have always liked the path less traveled, so I elected to study and map the Wakhjir Valley and Pass, a trekkers paradise.


Wakhjir Valley and Pass (Russian Topo J-43-101) Modified

Wakhjir Valley and Pass from Russian Topo J-43-101

First in conducting research, I discovered a site, Poehali!, offering 34,727 free Russian topographic maps (1:100,000). Not only do they offer the topos, but a corresponding MAP file to facilitate georectification. Like a kid in a candy story, I downloaded 11 topos with MAP files. I'm not the greatest at reading cyrillic, but using Google Translate, while comparing the topos to both Landsat ETM+ N-43-35-2000, which covers all of my target area and Google Earth imagery, I was able to make sense of the written data included on the topos.

During my study of the topos, I determined that the Russians had digitized the international borders with a greater accuracy than any of my border sources. Using their topos as base imagery, I digitized new international borders for this area.

The 100-meter contours were generated using void filled SRTM files and Global Mapper. They took about 30-seconds to create once all of the necessary files were loaded. The Russians used 40-meter contours. I think that is overkill. So I elected 100-meter contour intervals.

See all of the glaciers, meadows and streams? That's what took many hours to digitize. All of this data was taken from the Landsat ETM+ N-43-35-2000 imagery. It is virtually cloud free and snow free leading me to believe the imagery was taken during the short summer. It was a matter of how detailed I wanted my map to be. The glaciers were tedious to digitize. I was able to map all glaciers and snow banks that were imaged. The streams were the easiest to map and the least accurate. Landsat, at 14.5 meter resolution, makes that mapping difficult. If the streams/rivers branched, I created a layer called meandering riverbed. My final polygon layer high mountain meadows. The people living in this part of the world are herders. These mountain meadows are critically important as food for their domesticated animals, sheep and goats. These mountain meadows consisted of the lime-green colored vegetation layer located along the valley floors. Needless to say, these three polygon layers were challenging to map and time-consuming to digitize. I wanted to stop and move on to an island, but I counldn't bring myself to do it. Today, I am done! The map can still use work, but I am done.


Wakhjir Pass - Google Earth Pro Image Modified

Wakhjir Pass - Google Earth Pro Image

The above image shows the climb one would need to make in order to get to the pass and cross into China. Apparently, Marco Polo is reputed to have crossed at Wakhjir Pass on his historic trip into China. On the way he recorded a description of the sheep that takes his name, the Marco Polo sheep


Marco Polo Sheep

Marco Polo Sheep (picture from Snow Leopard Conservancy)

Their numbers are dwindling due to lose of habitat, over hunting and weather extremes. George Schaller has worked tirelessly to save these endangered animals. He would rather not have these majestic animals hunted, but if they must be then the hefty fee of $25,000 per hunt, should be used to benefit the people of the Wakhan. He also is working to establish a 50,000 sq kilometer multinational park that will go far in protecting the Marco Polo sheep and their unique habitat.

Finally, for all of you visiting my site expecting to see my latest island map, I apologize and will endeavor to remedy the situation. For all of you who appreciate a nice map, select the top map image and see the map at full size. Pretty cool, huh?

Enjoy!

Wednesday, May 27, 2009

Thoughts - DigitalGlobe Imagery in Google Earth and Island Mosaics

Guadalupe Island - DG from GE (1-15,000) Small

Guadalupe Island - DigitalGlobe Mosaic from Google Earth (1:15,000)

I have been gently reminded, agressively scolded and accused of being an image thief. I appreciate the gentle reminders that DigitalGlobe imagery found in Google Earth is still the property of DigitalGlobe, yet is shared with all of us via the Google Earth platform. Let me explain.

A few years back as DigitalGlobe imagery began appearing in Google Earth, I did what many viewer did, I saved copies of high-resolution images of features I found interesting. My dilemma was my interest in islands, which most often require a number of images mosaicked together to create a detailed view of the island that I could then use to create my island maps. After creating my first DigitalGlobe high-resolution mosaic of an island with imagery taken from Google Earth I made my first phone call to Google Earth. I explained how I constructed my high-resolution base image using DigitalGlobe imagery found in Google Earth. I further explained that I used the georeferenced mosaic as my base image from which I would produce an island map for non-commercial purposes. A map that I would post to my website, EVS Islands. In addition, I would also post the mosaic to show readers my base image from which I produced my map. The magic word was "non-commercial". The gentleman I spoke with said that as long as the map was for non-commercial uses, Google Earth had no problem with my efforts, as long as I credited them when appropriate. He added, as far as the DigitalGlobe imagery was concerned, I needed to speak with them. Even though Google Earth hosts the imagery, I needed DigitalGlobe's okay to use their imagery as I was using it. So I called DigitalGlobe.

The individual I spoke with listened to my explanation of how I wanted to use their imagery. The "non-commercial" use of the imagery was again a key element of my intended use. I carefully explained how I took a series of DigitalGlobe images from Google Earth, mosaicked them, georeferenced the finished mosaic, digitized my vector layers of interest and finally posted both my finished map and an image of the DigitalGlobe high-resolution island mosaic to my website. He asked to see my map, the DigitalGlobe mosaic and the image of the mosaic. I emailed them to him. He checked them out and talked with his people. He emailed back that as long as my work derived from their imagery was for non-commercial purposes and I credited them as a source I was good to go.

It has been over two years since that first conversation. I have had a number of subsequent conversations with DigitalGlobe representatives concerning my use of their imagery. They have consistently advised that my use of their product and the crediting I give is acceptable.

Currently, I seldom use DigitalGlobe imagery to construct my island maps. I, almost exclusively use Landsat ETM+ as my base imagery. I hold out hope that somewhere, someone just might want to purchase my enhanced vector shoreline precision maps. So far, it is a "no go", but I hold out hope. In the meantime, I continue to admire the excellent high-resolution imagery made available through the joint efforts of DigitalGlobe and Google Earth. And if and when I need that high-resolution image of a large island, I'll go ahead and construct a DigitalGlobe image mosaic knowing that, so far, both Google Earth and DigitalGlobe representatives have given me the "okay".

Enjoy!

P.S. - Each use of DigitalGlobe's imagery found in Google Earth should be discussed with their representatives. They will determine the actual or potential impact upon their business. Be up front with them, giving a complete description of how you will use their imagery. My experience is that they will support most, not all, non-commercial uses of their imagery copied from Google Earth. The same goes for Google Earth. The problem comes in locating the right person to render a decision concerning your use of their product.

Friday, May 22, 2009

Thoughts - Continuing Yesterday's "Wow"!

Four Layers Loaded into Google Earth

Arutua Atoll - Four EVS Precison Layers Loaded into Google Earth

A reader of EVS Islands suggested that I load my island maps into Google Earth. He had taken the Flickr image of Arutua Atoll and created a Google Earth overlay. He did all of this work by manually matching the EVS image to the GE base image. After viewing his work I had another Wow! moment. It turns out Global Mapper creates KML/KMZ files. I have generated GE KML/KMZ overlays previously, but I thought I would try something different. Using the Arutua Atoll vectors, I created a separate overlay for each vector layer using PNG image format's transparency function. I began with my Reef Shallow and the ocean as my first layer without any color transparency.


Base Layer Loaded Reef Shallow with Ocean

Arutua Atoll - Base Layer Reef Shallow with Ocean (1:75,000)

The other three layers would rest atop this base layer. The next three layers were EVS Island Polygons, Vegetation and Inland Water. I made the blue ocean the transparent color for these layers. This resulted in overlays consists of 12 georectified tiles per layer neatly positioning an EVS precision island map into GE.


Four Layers Loaded into Google Earth at 1-75,000

Arutua Atoll - Four Layers Loaded into Google Earth (1:75,000)

Loading these four layers in proper order (Reef Shallow, EVS Island Polygons, Vegetation and Inland Water) one is able to switch layers on and off to view this atoll from a number of unique perspectives. Pretty cool!


Arutua Atoll - Four Layers in KML

Arutua Atoll - Four Layers in KMZ Files

I have posted the four layers and you are welcome to download them and try them out. They are at the following links: Reef Shallow, EVS Island Polygons, Vegetation and Inland Water. Remember to load Reef Shallow first, EVS Island Polygons second, Vegetation third and Inland Water last. The map is at a scale of 1:75,000. That allows you to view the map at the 4.00 kilometer center read using GE's scale bar. If you take the map below that scale it begins to get ugly fast (blurred lines and colors). Hope you find it interesting. Comments are appreciated, especially KML/KMZ types. I am certain there must be a way to load all layers within one KML/KMZ packet and still be able to retain the ability to pile layers on top of each other and exercise control over whether a layer is on or off. Thanks in advance.

Enjoy

Thursday, May 21, 2009

Thoughts - Wow! I Didn't Know Global Mapper Could Do That or Discoveries at 4:00AM

Arutua Atoll FP - EVS Precision Map From Landsat S-06-15_2000 (1-170,000)

Arutua Atoll FP - EVS Precision Map (1:170,000) - Upper Image


Atoll (1-75,000)

Arutua Atoll FP - EVS Precision map (1:75,000) - Lower Image

At first glance, except for a simple coordinate grid, use of a slightly different map scale and the addition of other necessary cartographic trappings, my original image of Arutua Atoll (upper) looks like the Arutua Atoll (lower). Although the images are both sized at 500 x 347 pixels, to fit into this web page, the two images are quite different. The upper image is JPG, whereas the lower image is PNG. I have been using PNG format images for my last few posts. Supposedly, they give one a better, sharper image at a much smaller size compared to JPG. Frankly, for what I am doing (posting an image of a vector map) the JPG format seemed to work fine. That is until I discovered my Global Mapper "Wow!".

I love my finished maps and enjoy sharing them with readers that appreciate my work. I believe most readers are often content to view an island image, read the brief article, ponder it and then go their merry way. As it should be. However, for the intrepid few that really want to check out the island map, that take the time to select the island image and view the original sized image in Flickr, have I got a treat for you!

If you select the lower Arutua Atoll image and follow it to Flickr, you will be able to view my original sized image of Arutua Atoll at a scale of 1:75,000. Global Mapper, my primary mapping software, allows me to capture a screen's contents to an image.


GM Image Capture

Global Mapper Image Capture

This is not a new discovery, as I have been using this option for years. But this morning I decided to changed the image size from a default of 1264 x 875 pixels to 2578 x 1750 pixels. This change transformed my 1:150,000 scaled island image into a 1:75,000 scaled island image. My original 1:150,000 scaled image will print on a standard 8.5" x 11" sheet of paper. To print my 1:75,000 scaled image would require a 21" x 14" paper. Within Flickr, the reader can view an image that more nearly displays the island at it's EVS precision viewing limits (between 1:75,000 to 1:50,000). Using Global Mapper to create my images, I am able to generate two additional files that allows one to view the island image with appropriate lat/lons (.pngw and .prj files).

My bottom line discovery - by varying Global Mapper's screen image capture size, I am able to quickly generate EVS precision island maps at meaningful viewing scales. And that's my 4:00 AM "Wow!"

Enjoy!

Wednesday, May 20, 2009

Thoughts - Atolls, Beautiful Daughters of the Reef

The following is an article written by Alex du Prel, publisher of Tahiti-Pacifique magazine. He offers it for your reading pleasure. Enjoy!


Atoll Beach

A beach landing area on an islet on Bora Bora's fringing reef (AKK_1731.jpg)

"I love reefs because that's what creates atolls.

I am a nut about atolls. I live them with passion. "Stupid you," say some friends, "How can you be crazy about a pile of sand?"

Well, maybe. But an atoll is a different universe. It's fragile jewel. A new world altogether. A place of intimate communion with nature. For it's the only land on earth created by life. By a living organism, coral. And it's a clean living sphere, so rare today, where you can even walk barefoot all day without ever having muddy, dirty feet.

An atoll is not the result of the clashing of tectonic plates nor a piling up of some rocks. It doesn't erode, it grows. An atoll is the offspring of a secret pact between the noble elements of our planet. The fire of the bowels of Earth places the embryo; patience of time shapes it; water and sun nourishes it; the wind weans it.

Look at the Pacific Ocean. Huge. Vast, never ending. So vast. More than half our planet. Deep also, more than four kilometers deep, on average.

A small weak spot in the cold dark bottom of this endless blue water ocean. And the fire of genesis will slowly, patiently, step by step, push the magma up until, sometimes, it will breaks through the surface of the sea. This volcano then, a huge mass, from it's base to the sea level will be taller than the highest mountain on some continents.

The volcano will eventually run out of fire, will become extinct. Its weight, so massive and so lonely thousands of kilometers from any continent, will make it sink. Slowly. Inevitably. Erosion from rain and wind will help it disappear again below the sea.

But a small detail changes everything. Tropical polyps, the coral, will discover a perfect habitat on the slopes of that sinking mountain.

A solid base. A warm ocean. Lots of light, sunshine. And tons of oxygen provided by the endless surf produced by steady trade winds or storms in the far Roaring Forties.

As the volcano keeps sinking, the coral will keep growing. Generation after generation on top of the calcium skeletons of their ancestors. Soon all trace of the volcano disappear - just a ring of coral will continue to grow and a lagoon will be born. An oasis of teeming life in warm tropical waters known to lack nutrients

The never stopping swells of the huge ocean will then cuddle this fragile jewel with loving care. Stroke it with its waves. Feed it with its oxygen. For centuries, ages, eons.
But nature, just like man, can turn momentarily insane, crazy, violent. Especially when it feels too hot. In its short folly it will try to destroy, maim, mutilate what it had nurtured with much patience, softness. This insane fit is called a hurricane, typhoon, cyclone, whatever.

Monstrous waves, like tremendous sledges, will then pound, break, smash the fragile and colorful underwater gardens. The nursing swell turned into a destructive ram will lift entire reef sections up, throw them on top of others; will grind coral and beautiful shells into sand.
Worn out, the ocean will quiet and expose a view of desolation in proportion to its short fury. On the wounded reef large mounts of debris will rot and stink in the reappearing sun.

A few years later, the rains will have rinsed the salt out of these new dunes. Sea birds will joyfully discover a new roosting place. Their droppings will provide nitrogen and seeds. A few years later the dunes will be green with bush, grass and other vegetation. Some coconuts will be washed on these new shores and will find a place adequate to take root.

An atoll just has been born. An island consisting only of a sandy ring, one of these "islands full of water" with no trace of mineral soil. An island whose future entirely depends on the continuous growth of the reef. A reef which will repeatedly heal itself, continue to be the protective barrier for the fragile sand island and provide a never ending supply of new material. Without the ramparts made of billions of living polyps, the swell would just take one swallow of these storm leftovers.

There is all the ambiguity of an atoll : every time the weather has a fit, churns the ocean and tries to destroy it, this action only creates more debris that adds material to the atoll, providing more land. That's why an atoll, pure product of the reefs, is a living being that feeds on its environment, adapting to and thriving from its moods.
Lots of time will pass. Lots. Eternity. The fringing islands (motu) on the circular reef will get large enough to permit a fresh water lens to establish itself, which in turn will allow the growth of taller trees, like the coconut tree or the pandanus tree (screwpine).

Then, some day, some men, lost on the endless sea, crowded in a fragile outrigger canoe, will be washed onto these remote shores.
They will worship this life saving land. They will learn to survive, even prosper on these few and ever lonely acres. Learn to peacefully cohabit on it. They will figure out how to feed themselves, how to dress, how to heal with only coconut, fish, shells, taro and live that way for generations.

Actually, unless you are an absolutely stupid urban dude, you cannot die of hunger on an atoll. Beside the plentiful fish and shells that thrive in the lagoon, the lobsters on the reef (on moonless nights), there are coconuts and land crabs on the motus next to many other plants that can be eaten as salad or as a snack. Not to mention the many birds, and their eggs. To obtain fresh water other than the one in coconuts, one takes a big shell and digs a hole in the sand in the center of a motu, a meter or so deep to find the fresh water lens.

This reminds a story. I had the luck to be the manager of a small atoll (5 km diameter) with just a tiny hotel on it, De Luxe Robinson Crusoe style, with no other population.

One day, after a long walk along the beaches, we discovered on the other side of the atoll a sailing yacht laying wrecked on the barrier reef. On the beach opposite the wreck, a terrified family with two teenage children was camping. They were in rather poor shape, emotionally as well as physically. They had crashed onto the reef one night 10 days earlier and, poor navigators (that's before GPS existed), they thought being stranded on an uninhabited island. They had stayed close to the wreck of their yacht because that's where their (canned) food, and their water were. But one must admit they did manage to open and eat a few coconuts. Would they have been just a little more adventurous and only have crossed the motu to it's lagoon side (about 200 meters), they would then have been able to see in the evening, across the lagoon, the lights of the restaurant where one could order quite a fine meal, fit for Western taste with even a good wine, if you please.

An atoll is also a place where cultural shock do happen. Like this gentleman from New York. Instantly transported with no preparation from Broadway to primitive nature thanks to the speed of jet airplanes, he suddenly discovers in front of him the splendor of the lagoon and it's thousands of shades of blues and greens. Stunned, he walks (in his city shoes) to it's edge, cups up a handful of water, looks at it while it runs through it's fingers, tastes it and walks up to me;
-" Excuse me, Sir, may I ask a question ?
- Pllease do.
- Could you tell me what you put in the lagoon water to keep it so clear ?"
True, authentic, no joke!

Another time, a very blasé wealthy gentleman and his young secretary-mistress spent the week-end on the atoll. I take them by boat to one of the bird islands. Standing on an immaculate and long white sand bank, before a background of thousands of coconut trees beyond the shades of blue, with hundreds of birds flying around us while other stand lined up on the beach looking at us, I realize the gentleman is impressed. This makes me proudŠ until he says : "How much an acre ?" The secretary-mistress hit him on the head with her "Night of the Iguana" style umbrella.

Or this young very nice Italian of good breed who arrives for honeymoon with his fresh wife, a socially "active" girl. While the groom immediately fell under the spell of the atoll and it's peace, the lady realizes no one is there to be jealous of her wardrobe or to be impressed by her importance. Thus, all week long she complains about everything, continuously nagging her husband, typical syndrome of people who cannot bear to be alone with themselves (that's why bars have much business). When the couple leaves, the Italian lets his wife get aboard the small plane and tells me :
- "I'd like to apologize for her behavior." He adds , smiling : "Also, I'll be back soon, with another wife !"
I answer : "Great, but make sure you bring her here BEFORE marrying her !"

Permanently living on an atoll is a dream for a person who has the right mentality. But it also has it's risks. Just go to the "highest" spot on one of these atolls in the Pacific Ocean and stand there to admire the thousands of shades of blue waters in the lagoon. After being dazzled by such beauty, you might also look at your feet. It's then that you realize that this highest spot of the island is just a little pile of gray coral chunks, only 3 meters above sea level, next to the pass, facing the breakers of an endless swell curling along the barrier reef.
Now look to your right. Only ocean : 9000 kilometers of open ocean to the shores of South America. Look to your left : 7 000 kilometers of rolling swell to the beaches of Australia. Look behind you. 6 000 kilometers of stormy ocean till the icebergs of Antarctica. Look in front of you: another 9 000 uninterrupted kilometers to the Bering Straights, icy shores of Alaska and Siberia. You've just learned what isolation, real isolation, means.

Now think of these chunks of coral under your feet. You suddenly shudder. You just realized that it's the ocean that put the coral there. And that it can take it away just as easily. Three meters high in an ocean that spans half the planet is less than the tenth of the thickness of a cigarette paper floating in an Olympic swimming pool. Yep ! Andthe island is NOT floating.

A major cyclone. A tsunami created by some big earthquake in Chile, in Alaska or Japan. A major underwater volcanic eruption. A big meteorite falling into the sea. Any of these events can generate a wave that would just roll over this pile of broken coral, without even noticing, flushing into the open sea everything, sand, trees, shells and people. Everything. It has happened many times, and will happen again in one hour or in ten thousand years. Who dares say that guys like me who escape to these sand islands are cowards running from the reality of life ? This must be one of the most dangerous spots on earth. Living here is like playing continuous Russian roulette. But isn't risk the spice of life ?

Sometimes it can even get funny, unbelievable. Like getting flooded by fresh water, yes, fresh water, on an island surrounded by ocean, without a lake, a river, not even a tiny creek : It happens about every 20 years in the Tuamotu archipelago : a huge swell created by some major storm in the North Pacific arrived in the Northern Tuamotus, 8000 kilometers to the South, and raises the sea level to such a point that the freshwater lenses of the atolls get flushed up, out of the ground and inundates villages of many atolls.

But whatever, I'd rather be on an atoll.

©2009 Alex W. du PREL

Moorea, Tahiti
tahitipm@gmail.com

Published (in German translation) in "Mare Magazin", April 2009.