Prime Meridian – Mystery, fantasy and romance at the dangerous ends of the earth

Knowing Where We Are in the World – and in Story

By Karen Abrahamson | May 12, 2012

_DSC0039 — Cypress tree, Northern Everglades (2012) Photo (C) Karen Abrahamson

I’m currently working on two pieces of writing. One is the third novel in the Terra Trilogy and the other is the third installment of the Ice Dragon Series of short stories. Working on these two projects has made me question how I know where I’m going and how do I know where I am in relation to everything else in both these stories. It brings to mind the question of how we know, in our real life, where we are in relation to the rest of the world.

In this day of GPS and mapquest etc. this might seem like a very easy question to answer, but it wasn’t always this way, just like I wasn’t always able to have a sense of where I am in a story. Yes, surveyors took it upon themselves to survey the world. Countries (and scientists) agreed on the prime meridian that impacts all our time zones. But the 20th century has primarily been concerned with improving the precision of mapping and in particular with ensuring the pinpointing of places on the map in relationship to the rest of the world. The US Geological Survey was involved in this through most of the 20th century.

_DSC0082 composite — Waterlilies, Northern Everglades (2012) Photo (c) Karen Abrahamson

Why is this important? Well, think about it. Without standard understanding of how everything relates to everything else, weird things happen, like bridges getting built from each shore that don’t meet in the middle, or highways that have weird jogs in them because the measurements allowed the two ends to miss each other. It might not be important to you, but the cost overruns of such mistakes make having a common context for measuring everything important because it stops these types of things from happening.

In North America, the result of the surveying is those nice little brass discs (known as monuments) set in concrete or rock dotting the landscape . Each of these little brass discs serves as a known point for all subsequent surveying in the area. How did they know the individual location of these monuments? They took meticulous measures of distance through triangulation surveys and also measured the azimuth—the direction of Polaris—to set each monument’s position.

Throughout America, broad swaths of land were surveyed independently to create grids of known locations. They measured locations not only horizontally across the landscape, but also vertically, in relation to sea level, but the challenge was knowing that all these grids fit together. The result was the selection of a single monument at a ranch in central Kansas, Meades Ranch, as point zero for all grids across the country. Meades was chosen because it sat centrally in the US and it lay close to the crossing of two major survey lines across the US – one from Canada to Mexico and the other from the Atlantic to Pacific Ocean. Interestingly, today Meades Ranch has been superseded by global positioning that uses the center of the earth as the central point of reference.

airboat — Airboat docked in the Northern Everglades. (2012) Photo (c) Karen Abrahamson

The use of that central point for mapping draws me back to my thoughts on plotting a novel or story. I once heard the wonderful writer, Nancy Kress, talk about plotting. Now I don’t know how you feel about plotting—some people are all for detailed plotting of everything in a novel, while others prefer to fly by the seat of their pants (Pansters) and write into the mist of their imagination. Nancy Kress seemed to offer a third alternative that didn’t hold a writer’s imagination down, but also gave some structure to writers so that all that lovely mist didn’t turn into a dense blinding fog. Ms. Kress suggested that writers need to write down what they think is going to happen in the novel. Just brainstorm them out. Ask yourself what is the beginning (the inciting event) and what is the midpoint (quiet often a reversal of some sort), and how do you think the story will end (the climax)? Once you have those key points identified, you can easily place them on a plot line and them locate all your other plot ideas on either side of the midpoint—a lot like being able to measure your location from Meades Ranch.

In Search of a World Map

By Karen Abrahamson | February 25, 2012

This week I finished the second draft of book two in my post apocalyptic fantasy, Terra Incognita, series. It wasn’t easy because it required a fairly major rewrite of much of my major character’s attitudes and motivations because I hadn’t mapped my character out from book one to book three. As I get started on Book Three, I’m thinking about how the importance of a consistent road map across a series of books is just as important as a consistent map of the world.

My last post spoke of the work done to standardize measures in mapmaking that led to the creation of the scientific metric measuring system. But the creation of the metric system was only the start in a venture to create of a consistent set of maps of the world. This might not seem sexy, but think about traveling to a different locale and finding the maps you are using don’t use consistent measurements and contradict each other. You end doing a mass of translations to make the maps work or you might end up throwing the maps out because they are so inconsistent it’s easier to simply start from scratch. That was the situation for many explorers because the maps they had might have used a consistent measurement scale (but not always), but were also based on measurements started from different starting points. In other words the Prime Meridian had never been agreed upon.

The trail turns upwards (2011) Photo (c) Karen Abrahamson

After the agreement about the metric system, there were still disagreements in the cartographic world. One of the major ones was the position on the earth from which meridians (the imaginary lines drawn on the earth from pole to pole that connect all spots along the longitude) should be referenced – in other words where was the zero point on the globe from which all other distances would be measured. To this point in time, where measurements began depended upon the nationality of the scientist conducting the measurement.

The need for a Prime Meridian had existed for all Cartographers. Ptolemy had chosen the Fortunate Islands – at his time the westernmost extent of the world. But the age of politics had national sentiment taking precedent with the French recommending the zero point’s location in Paris, the Spanish recommending either Toledo or Cadiz, the Italian Pisa or Rome, and Americans wanting Washington or Philadelphia etc. It took the International Meridian Conference in 1884 to settle on Greenwich as the Prime Meridian which gave us our zero longitude, and also set our clocks and time zones with Greenwich Mean Time.

grand canal 3 — Venice's Grand Canal (2004) Photo (c) Karen Abrahamson

A later conference of the International Geographic Congress realized the mapping issues I mentioned above meant that there was a need to revise the world’s maps to create a consistent map of the world. It led to a proposal for an International Map of the World that would all be drawn to a single scale – 1:1,000,000 (1 centimeter =10 kilometers or 1 inch equals 15.78 miles) – leading to the name of the project being the Millionth Map. It would also be drawn using standardized symbols and colors. The project was debated for a period, but after examples of the maps were produced, in 1913 an agreement was reached. Maps were to be created for each 4 degrees of latitude and 6 degrees of longitude, not paying attention to national boundaries. All place names had to use the Roman alphabet.

little girl bw 2 — Little Uigher girl, Sunday Market, Kashgar, Western China (1997) Photo (c) Karen Abrahamson

It was a slow process. Between 1913 and the start of the First World War only eight maps were produced out of a total of 2,500 required to map the world. Between 1921 and 1946, the American Geological Survey produced the 107 maps that comprised the map of Hispanic American (North and South America). By the 1930s 405 maps had been produced in total, but the central repository of the maps (in Paris) was largely destroyed during the Second World War. In 1953, the United Nations assumed responsibility for oversight of the project, but by the 1980s only 800-1000 maps had been completed and many were not completed using exactly the same standards. Since then the U.N. has stopped even reporting on the project, so after all this work the Millionth Map languishes and who knows when you’ll fall right off its edges when you visit another country and have to work with maps that don’t mesh.

This suggests that I had better get busy and piece together the latitudes and longitudes of book three in my series, so that all of the books provide a complete and consistent picture of Terra’s world.