Science
From 1912 to 1947, HVO was located near the present-day Volcano House Hotel in Hawai‘i Volcanoes National Park. In 1948, HVO was moved into a building that is now the Park's Thomas A. Jaggar Museum, where it remained for almost 40 years. In 1986, HVO
FAQs
What is The National Map Structures Tint?
The National Map’s Structures Tint dataset represents manmade structures using broad-area tints rather than defining the exact shape of individual buildings. The Structures Tint data was provided by Oak Ridge National Labs and the Federal Emergency Management Agency. This dataset was introduced in 2021 and is designed for use at the 1:24,000 scale (the standard scale for USGS topographic maps) or...
Can I donate a map that isn't already in the USGS Historical Topographic Map Collection?
The USGS will gladly accept donations of digital, scanned copies of historical topographic maps (published 1884-2006) that are not in our current Historical Topographic Map Collection (HTMC). We do not accept donations of paper maps. Donated products must be published USGS topographic maps, 1:250,000 scale or larger, with basic required metadata included. Before submitting map donations to the...
How do I use a scale factor with Landsat Level-2 science products?
Landsat Level-2 products are written as scaled integers to allow us to convert the data from floating point to integer for delivery. In most cases these are written to a 16-bit integer, which saves disk space and provides faster download times. Each floating point pixel has an offset applied and then multiplied by a gain to bring the value into the 16-bit integer (or unsigned integer) range. These...