This model was called the glaciological flow model. This model shows how the snow flowed and spread out as snow piled on. The deeper the layer is, the thinner the layer becomes because it was compressed more. This model gave the scientists an idea of the age of the layer of ice. The model was not perfect, they had to fix the model. They looked for particles from eruptions which were called tephra. The date of the eruption had already been determined so therefore, when tephra appeared in the layer scientists knew the date of the ice layer. The large changes in of the ratios of hydrogen to deuterium in the ice shows that something is missing in the model, for an example a glacial event. They took that into account and changed the model to try fill in the blanks. They also took that idea and showed that they realized that there is a possible difference in their data and what actually
This model was called the glaciological flow model. This model shows how the snow flowed and spread out as snow piled on. The deeper the layer is, the thinner the layer becomes because it was compressed more. This model gave the scientists an idea of the age of the layer of ice. The model was not perfect, they had to fix the model. They looked for particles from eruptions which were called tephra. The date of the eruption had already been determined so therefore, when tephra appeared in the layer scientists knew the date of the ice layer. The large changes in of the ratios of hydrogen to deuterium in the ice shows that something is missing in the model, for an example a glacial event. They took that into account and changed the model to try fill in the blanks. They also took that idea and showed that they realized that there is a possible difference in their data and what actually