Research sites

Delta Stream at F10

USGS site 7; coordinates taken from 1996-97 GPS measurements at center of weir Parent Stream: Delta Stream Provenance : GPS96-97.DOC ID: delta_f10

Coordinates: 

Latitude: -77.624619000000
Longitude: 163.108444200000

Delta Stream at lower site

Coordinates based on averaging the starting and ending points of the 'Delta stream at gage' transect (measurements are occasionally made in middle of the established transect) Parent Stream: Delta Stream Provenance : StreamsIC-97-98_ques.txt ID: delta_lower

Coordinates: 

Latitude: -77.625687000000
Longitude: 163.109603900000

Delta Stream at mouth

Coordinates taken from 1996-97 GPS measurements at center of creek where it enters Lake Fryxell Parent Stream: Delta Stream Provenance : GPS96-97.DOC ID: delta_mouth

Coordinates: 

Latitude: -77.623291000000
Longitude: 163.109252900000

Delta Stream at upper site

Coordinates based on averaging the starting and ending points of the 'Delta stream at upper site' transect (measurements are occasionally made in middle of the established transect) Parent Stream: Delta Stream Provenance : StreamsIC-97-98_ques.txt ID: delta_upper

Coordinates: 

Latitude: -77.653030000000
Longitude: 163.098678600000

Dirty Little Hoare Pond

Dirty Little Hoare Pond is adjacent to Lake Hoare. It is ~8 m in diameter and 30 cm deep. On 22-Jan-95, the pond had a partial ice cover (~30%), and a water temperature of ~5C. Valley: Taylor

Coordinates: 

Latitude: -77.622901916504
Longitude: 162.902999877930

Don Juan Pond

Don Juan Pond is located in the west end of the Wright Valley. It is wedged between the Asgard Range and the Dias. On the west end there is a small tributary and a feature that has been described as a rock glacier. Don Juan Pond is a shallow (i.e. flat bottom) hyper-saline pond. The salinity is high enough that it doesn't freeze even in winter. Therefore, unlike other lakes and ponds in the dry valleys, it has no ice cover. It has been described as a groundwater discharge zone. The dominant ions in solution are calcium and chloride. The area around Don Juan Pond is covered with sodium chloride and calcium chloride salts that have been precipitated as the water evaporated. Area and volume of Don Juan Pond varies over time. According to the USGS topo map published in 1977, the area was approximately 0.25 sq. km. However, in recent years the size of the pond has shrunk considerably. The pond has changed over the past 5 years although this is mostly anecdotal. The maximum depth in 93-94 was described as "a foot deep." In Jan 97, it was approximately 10cm deep; in Dec 98 the pond was almost dry everywhere except for an area 10's of sq meters. Most of the water that was left was restricted to depressions around large boulders in the pond. Valley: Wright Distance to Sea : 60 Maximum Length (km): 0.75 Maximum Width (km): 0.35 Maximum Depth (m): 0.1

Coordinates: 

Latitude: -77.561897277832
Longitude: 161.190994262695

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