Friday, September 5, 2008

Mapping History a la Bente

Here is a collection of images for the article on Mapping history to be published on www.lilja.no




Beginning of civilizations. All developed some sort of mapping. China distinguished itself be more pictoral and descriptive maps whereas the other civilizations went more for symbols and did not use text to describe the landscape/topology.




Ancient civilizations around the rivers






Stone Map:
Chinese maps: example of pictoral map, and the stone map with very good representation of the rivers and a mathematical method that is still not understood...






d'Anville:
After centuries with very little exchange of culture China opened up to jesuits and they influenced the development of cartography in China. Emperor Kangxi ordered a complete renewal of Chinese maps from the jesuits. It resulted in the famous atlas d'Anville published 1735 in Paris. Thus Europe also got new improved maps of Asia, China included.

Jesuits explained the theory and methods and the local Chinese performed the necessary surveys. However, Tibet was still off-limits for the Chinese as well as any other foreigners and the nature itself made it also very difficult to produce good maps of the Tibetan plateau.






Above maps found at Hokkaido University Library





Pundits - Hedin:
In the 1800--1900 Central Asia became a strategic geographical politics focus. The British Empire and Russia both closed in on Central Asia and the Tibetan Plateau with the Chinese playing sligtly on te sideline in what is named the Great Game. So the geopolitical significance of Tibet rose dramatically and both parties felt the need to know more about this regions geography. Warfare without maps is impossible. The maps at the time weren't much improved since d'Anville 1735 and it was practically impossible to enter Tibet both for political reasons and the very nature of the place.



Title 1906 Tibet and the surrounding regions
Full Title Tibet and the surrounding regions : compiled from the latest information
Author Sharbau, H. (Henry)
Publication Date 1906


Map of the stipla u bend of Yarlung Tsangpo:
Timber were sent and lives sacrified to map this particular part of the surface Earth.




Title 1906 Tibet and the surrounding regions
Full Title Tibet and the surrounding regions : compiled from the latest information
Author Sharbau, H. (Henry)
Publication Date 1906

Modern Chinese Maps:
Today's process of improving the Chinese maps including Tibet. 5 year plan.

Satellite images: Himalayas - Yarlung Tsangpo and compare with the old maps with incomplete information about the bend.




Yarlung Tsangpo, Tibet - Asia's Great Bend

Space geodesy and space technology have enabled taking good satellite images and hence getting more information about the geography. However, in-situ is still necessary in order to fully exploit the space tools.

Yarlung Tsangpo Gorge - GPS

GOCE: Height measuring. Mr. everest measuring very precisely early on, but still the accuracy is not good enpought for cliame change research and other applicatons yet to come.




Planetary cartography: Moon, Mars, Exoplanets.

Tuesday, September 2, 2008

Planetary roadmaps





Mars dichotomy








The above image links to a great article on Mars in general.






Science paper on Mars topography with lots of maps!!



he global map is built up from many thousands of orbits at constant altitude (mapping orbit), and uses colors to represent the strength and direction of the field caused by crustal magnetization. This is a small section of the map. (Full size image) - Credit: NASA




Dione



Credit: NASA/JPL/Space Science Institute

Fantastic cartography of Saturn's moon Dione.


Like the ancient cartographers of old, scientists working with images from Cassini-Huygens of Saturn's icy airless moons have carefully crafted detailed maps that one day may guide future explorers across the surfaces of these remote bodies.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency.

Large Dione







Mars Map



Credit: MGS/MOLA.


Topography of the "Tharsis side" of Mars as inferred from MOLA data (Mars Orbital Laser Altimeter) aboard the Mars Global Surveyor spacecraft. The color indicates the altitude (in km) above/below the MOLA surface reference. The Phoenix landing site (~ 68.3°N, 127°W) is marked by a plus sign.