This is the documentation accompanying the stress 
data from Chuck Estabrook

Catalog of maximum horizontal stress indicators for
Alaska and surrounding areas. Compiled by Charles
Estabrook and Klaus Jacob from all available earth-
quake focal mechanisms, borehole breakout, volcanic
and fault indicators. Earthquakes since 1960.

Reference: Charles Estabrook's Thesis, Columbia 
           Univ., 1992. Estabrook and Jacob, DNAG 
           Neotectonics of North America, volume, 1991.

BN1    	Boyd and Nabelek [1988]
BY1    	Boyd [unpublished data]
B79    	Bhattacharya and Biswas [1979]
B86    	Biswas et al. [1986]
C85    	Cook [pers. comm.,1985]
CH1    	Chandra [1974]
CMT    	references in Dziewonski et al. [1989]
CM1    	Cormier [1975]
E88    	Estabrook et al. [1988]
G85    	Gedney [1985]
GN1    	Gedney [1970]
HB1    	Huang and Biswas [1983]
HF1    	Hong and Fujita [1981]
HJ1    	House and Jacob [1983]
J68    	Jordan et al. [1968]
JA1    	Jacob [1986b]
JP1    	Jacob and Perez [unpublished data]
KIN    	King [1969]
LAF    	LaForge and Engdahl [1979]
LK1    	Liu and Kanamori [1980]
LW1    	LeBlanc and Wetmiller [1974]
NEW    	Newberry [1983]
NK1    	Nakamura et al. [1980]
P89    	Page et al. [1989]
PJ1    	Perez and Jacob [1980]
SRZ    	Suarez [unpublished data,1987]
SS1    	Sykes and Sbar [1974]
SB1    	Stauder and Bollinger [1964]
SB2    	Stauder and Bollinger [1966a]
SB3    	Stauder and Bollinger [1966b]
ST1    	Stauder [1968a]
ST2    	Stauder [1968b]
SU1    	Stauder and Udias [1963]
SUP    	Suppe [unpublished data, 1986]
WK1    	Wu and Kanamori [1973]

Bhattacharya B., and N. N. Biswas, Implications of
North Pacific plate tectonics in central Alaska:  
Focal mechanisms of earthquakes, Tectonophysics, 
53, 99-130, 1979.

Biswas N. N., K. Aki , H. Pulpan, and G. Tytgat, 
Characteristics of regional stresses in Alaska 
and neighboring areas, Geoph. Res. Lett., 13, 
177-180, 1986.

Boyd, T. M., and J. L. Nabelek, Rupture process of
the Andreanof Islands earthquake of May 7, 1986, 
Bull. Seismol. Soc. Am., 78, 1653-1673, 1988.

Chandra, U., Seismicity, earthquake mechanisms and
tectonics along the western coast of North America, 
from 42N to 61N, Bull. Seismol. Soc. Am., 64, 
1529-1549, 1974.

Cormier, V. F., Tectonics near the Junction of the
Aleutian and Kuril-Kamchatka Arcs and a mechanism 
for Middle Tertiary magmatism in the Kamchatka 
Basin, Geol. Soc. Am. Bull., 86, 443-453, 1975.

Dziewonski, A. M., G. Ekstrom, J. H.Woodhouse, and
G. Zwart, Centoid-moment tensor solutions October -
December 1988, Phys. Earth Planet. Inter., 57, 
179-191, 1989.

Estabrook, C. H., J. N. Davies, and D. B. Stone, 
Seismotectonics of northern Alaska, J. Geoph. Res.,
93, 12,026-12,040, 1988.

Gedney, L., Tectonic stresses in southern Alaska 
in relationship to regional seismicity and the new
global tectonics, Bull. Seismol. Soc. Am., 60, 
1789-1802, 1970.

Gedney, L. Stress trajectories across the northeast
Alaska Range, Bull. Seismol. Soc. Am., 75, 
1125-1134, 1985.

Hong, T., and K. Fujita, Modelling of depth phases
and source processes of some central Aleutian 
earthquakes, Earth and Plan. Sci. Lett., 53, 
333-342, 1981.

House, L. S., and K. H. Jacob, Earthquakes, plate
subduction and stress reversals in the eastern 
Aleutian Arc, J. Geophys. Res., 88, 9347-9373, 1983.

Huang, P. Y., and N. N. Biswas, Rampart seismic 
zone of Central Alaska, Bull. Seismol. Soc. Am., 
73, 813-829, 1983.

Jacob, K. H., A pilot study of borehole breakouts
as tectonic stress indicators in Alaska, Final 
Report, National Science Foundation, 1986b.

Jordan, J., G. Dunphy, and S. Harding, The Fairbanks,
Alaska earthquakes of June 21, 1967, Preliminary 
Seismological Report, U. S. Coast and Geodetic 
Survey, 60 pp., 1968.

King, P. B., Tectonic map of North America, scale 
1:5,000,000, U. S. Geol. Surv., Denver, Col., 1969.

LaForge, R., and E. R. Engdahl, Tectonic 
implications of Seismicity in the Adak Canyon 
region, Central Aleutians, Bull. Seismol. Soc. 
Am., 69, 1515-1532, 1979.

Liu, H., and H. Kanamori, Determination of source 
parameters of mid-plate earthquakes form the 
waveforms of body waves, Bull. Seismol. Soc. Am., 
70, 1989-2004, 1980.

LeBlanc, G., and R.J. Wetmiller, An evaluation of
seismological data available for the Yukon Territory
and the Mackenzie Valley, Can. J. Earth Sci., 11, 
1435-1454, 1974.

Nakamura, K., G. Plafker, K.H. Jacob, and J.N. 
Davies, A tectonic stress trajectory map of Alaska
using information from volcanoes and faults, Bull.
Earthquake Res. Inst. Tokyo Univ., 55, 89-100, 1980.

Newberry, J. T., Seismicity and tectonics of the 
far western Aleutian Islands, Master's Thesis, 93 
pp., Michigan State University, East Lansing, 
Michigan, 1983.

Page, R. A., C. D. Stephens, and J. C. Lahr, 
Seismicity of the Wrangell and Aleutian Wadati-
Benioff zones and the North American plate along 
the Trans-Alaska Crustal Transect, Chugach Mountains
and Copper River basin, southern Alaska, J. Geophys.
Res., 94, 16,059-16,082, 1989.

Perez, O. J., and K. H. Jacob, Tectonic model and 
seismic potential of the eastern Gulf of Alaska and
Yakataga seismic gap, J. Geophys. Res., 85, 
7132-7150, 1980.

Stauder, W., Mechanism of the Rat Island earthquake
sequence of February 4, 1965, with relation to 
island arcs and sea-floor spreading, J. Geophys. 
Res., 73, 3847-3858, 1968a.

Stauder, W., Tensional character of earthquake 
foci beneath the Aleutian trench with relation to 
sea-floor spreading, J. Geophys. Res., 73, 
7693-7701, 1968b.

Stauder, W., and G. A. Bollinger, The S wave 
project for focal mechanism studies: Earthquakes 
of 1962, Bull. Seismol. Soc. Am., 54, 2199-2208, 
1964.

Stauder, W., and G. A. Bollinger, The focal 
mechanism of the Alaska earthquake of March 28, 
1964, and of its aftershock sequence, J. Geophys. 
Res., 71, 5283-5295, 1966a.

Stauder, W., and G. A. Bollinger, The S wave 
project for focal mechanism studies: Earthquakes 
of 1963, Bull. Seismol. Soc. Am., 56, 1363-1371, 
1966b.

Stauder, W., and A. Udias, S-wave studies of 
earthquake of the North Pacific, Part II: Aleutian
Islands, Bull. Seismol. Soc. Am., 53, 59-77, 1963.

Sykes, L. R., and M. L. Sbar, Focal mechanism 
solutions of intraplate earthquakes and stresses 
in the lithosphere, in Geodynamics of Iceland and 
the North Atlantic Area, edited by L. Kristiansson,
pp. 207-224, Reidel, Boston, 1974.

Wu, F. T., and H. Kanamori, Source mechanism of 
February 4, 1965, Rat Island earthquake, J. Geophys.
Res., 78, 6082-6092, 1973.


type         n=normal, r=reverse, s=strike-slip, t=thrust,
             b=borehole, v=volcanic, f=fault
yr           origin time year
mo           month
day          day
hr           hour
min          minute
sec          second
lat          latitude in decimal degrees north of equator
lon          longitude in decimal degrees east of Greenwich
depth        depth
mb           body wave magnitude
Ms           surface wave magnitude
Ml           local magnitude
Mw           moment magnitude
trend_P      P-axis trend cw from north
plunge_P     P-axis plunge from horizontal
trend_T      T-Axis trend
plunge_T     T-axis plunge
trend_B      B-axis trend
plunge_B     B-axis plunge
max_horiz_comp  direction of P-axis, slip vector or
                infered stress direction cw from North
quality      quality of indicator
reference    reference found in enclosed list