Researchers include biologists, geologists, oceanographers, physicists, astronomers, glaciologists, and meteorologists. A number of glaciologists and climate scientists contested the claim. The reason remains debated by glaciologists. Atlin's extensive icefields have attracted recent interest from glaciologists and other scientists. The Society honours glaciologists who have contributed significantly to the science of glaciology. Forestry workers, glaciologists, and geographers call the boundary between these bands a trim line. A study by glaciologists of two small glaciers in South America reveals another retreat. Much of her work has focused on glaciologists, murderers, logrollers, and antique tractor collectors. Some glaciologists have predicted that the glacier will disappear by 2020. Many glaciologists have background studies in geology, physics and climatology. Glacier caves may be used by glaciologists to gain access to the interior of glaciers. The new influx of visitors to the glacier brought with it both mountaineers and glaciologists. Glaciologists now question whether the glacier will survive past 2020. Glaciologists subdivide glaciers into glacier accumulation zones, based on the melting and refreezing occurring.