Water is needed # 77005
- Regular
- 3.900 kr
- Sale
- 3.900 kr
- Regular
Sold Out
- Unit Price
- per
Water is needed. By Sigurjón Rist.
Sigurjón Rist became a pioneer in hydrological surveys in Iceland. When he began his work decades ago, he had to cross unbridged large rivers to reach the survey sites in the country's highlands. He can attest that the surveys themselves were then an easy task compared to such expeditions. Now the century is different and it is easier to find your way. And now more is also known about rivers and lakes in Iceland, for which Sigurjón is to thank.
It describes how flow and water volume are measured. It is not complicated in itself, but it does require considerable precision. And no less care. Occasionally courage and daring. Because not all large rivers are easy to deal with. Measurements must also be repeated in all seasons since flow is constantly changing, and can also vary greatly depending on the season. The nation has actually been taught this in past centuries.
Sigurjón Rist became a pioneer in hydrological surveys in Iceland. When he began his work decades ago, he had to cross unbridged large rivers to reach the survey sites in the country's highlands. He can attest that the surveys themselves were then an easy task compared to such expeditions. Now the century is different and it is easier to find your way. And now more is also known about rivers and lakes in Iceland, for which Sigurjón is to thank.
It describes how flow and water volume are measured. It is not complicated in itself, but it does require considerable precision. And no less care. Occasionally courage and daring. Because not all large rivers are easy to deal with. Measurements must also be repeated in all seasons since flow is constantly changing, and can also vary greatly depending on the season. The nation has actually been taught this in past centuries.