scholarly journals EXTENSIONAL TECTONICS, A SLAB WINDOW AND THE ARRIVAL OF THE GULF OF CALIFORNIA ABOUT 17MA, WHILE THE COYOTE MOUNTAINS OF SOUTHERN CALIFORNIA, USA UNDERGO 90° CLOCKWISE ROTATION IN SONORA, MEXICO

2018 ◽  
Author(s):  
George Morgan ◽  
◽  
JR Morgan
Keyword(s):  
Gulf Of California ◽  
Southern California ◽  
Extensional Tectonics ◽  
Clockwise Rotation ◽  
Slab Window

scholarly journals Fin whale song variability in southern California and the Gulf of California

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Ana Širović ◽  
Erin M. Oleson ◽  
Jasmine Buccowich ◽  
Ally Rice ◽  
Alexandra R. Bayless
Keyword(s):  
Gulf Of California ◽  
Southern California ◽  
Fin Whale

Redescription of the holotype of Bostrichoclerus bicornus Van Dyke, 1938, a rare species of the New World Tillinae Fauna (Coleoptera: Cleridae), with some taxonomic notes

Zootaxa ◽  
2019 ◽  
Vol 4544 (4) ◽  
pp. 548
Author(s):  
ALAN F. BURKE ◽  
JOHN M. JR. LEAVENGOOD ◽  
CLARKE H. SCHOLTZ ◽  
CATHERINE L. SOLE
Keyword(s):  
United States ◽  
Rare Species ◽  
Gulf Of California ◽  
Southern California ◽  
New World ◽  
Original Description ◽  
San Bernardino County ◽  
Southwest United States ◽  
Northwest Mexico ◽  
San Bernardino

Bostrichoclerus bicornus Van Dyke is known from southwest United States and northwest Mexico. To date, only two specimens have been captured: the holotype, collected on Isla Angel de la Guarda, in the Gulf of California, Mexico, and a second individual collected in San Bernardino County, California, United States. The original description of B. bicornus is brief and lacks any images. Considering its rarity, we present the redescription of this species based on the examination of the holotype and compare this taxon to similar genera of New World Tillinae. Images of the holotype and the Bostrichoclerus specimen collected in southern California are given. We conclude that B. bicornus is undoubtedly a member of the subfamily Tillinae with unclear intergeneric relations in the group. 

Fin whale song patterns in Southern California and the Gulf of California

2016 ◽  
Vol 140 (4) ◽  
pp. 3296-3296
Author(s):  
Ana Sirovic ◽  
Erin M. Oleson ◽  
Jasmine S. Buccowich ◽  
Ally Rice
Keyword(s):  
Gulf Of California ◽  
Southern California ◽  
Fin Whale

Does slab-window opening cause uplift of the overriding plate? A case study from the Gulf of California

2017 ◽  
Vol 719-720 ◽  
pp. 162-175 ◽  
Author(s):  
Chris Mark ◽  
David Chew ◽  
Sanjeev Gupta
Keyword(s):  
Gulf Of California ◽  
Window Opening ◽  
Slab Window

scholarly journals Gaussian mixture model classification of odontocetes in the Southern California Bight and the Gulf of California

2007 ◽  
Vol 121 (3) ◽  
pp. 1737-1748 ◽  
Author(s):  
Marie A. Roch ◽  
Melissa S. Soldevilla ◽  
Jessica C. Burtenshaw ◽  
E. Elizabeth Henderson ◽  
John A. Hildebrand
Keyword(s):  
Gaussian Mixture Model ◽  
Mixture Model ◽  
Gulf Of California ◽  
Southern California ◽  
Gaussian Mixture ◽  
Southern California Bight ◽  
Model Classification

scholarly journals Strain adjustments associated with earthquakes in southern California

1969 ◽  
Vol 59 (4) ◽  
pp. 1569-1589
Author(s):  
Stewart W. Smith ◽  
William Van de Lindt
Keyword(s):  
Elastic Body ◽  
Gulf Of California ◽  
Strain Energy ◽  
Southern California ◽  
Fault Slip ◽  
Two Dimensional ◽  
The Real ◽  
Major Earthquake ◽  
The Past ◽  
Southern California Region

Abstract A technique for the calculation of strain changes in a two-dimensional elastic body with arbitrary internal dislocations is presented. This technique is applied to the southern California region by assigning a specific fault and fault slip function for each major earthquake that has occurred since 1812. Although the model used has serious shortcomings when applied to the real Earth, certain important features concerning strain energy changes associated with earthquakes are brought out. The occurrence of earthquakes over the past 150 years has resulted in net increases in stored strain energy in a number of regions including the northern end of the Gulf of California, the Cajon Pass area, and the northern part of the Carizzo Plain. Large regions of strain energy decrease can also be seen, the most important of which is in the vicinity of Fort Tejon.

Crustal Spreading in Southern California: The Imperial Valley and the Gulf of California formed by the rifting apart of a continental plate

Science ◽  
1972 ◽  
Vol 178 (4056) ◽  
pp. 15-24 ◽  
Author(s):  
W. A. Elders ◽  
R. W. Rex ◽  
P. T. Robinson ◽  
S. Biehler ◽  
T. Meidav
Keyword(s):  
Gulf Of California ◽  
Southern California ◽  
Imperial Valley ◽  
Continental Plate

scholarly journals Warm oceanographic anomalies and fishing pressure drive seabird nesting north

2015 ◽  
Vol 1 (5) ◽  
pp. e1400210 ◽  
Author(s):  
Enriqueta Velarde ◽  
Exequiel Ezcurra ◽  
Michael H. Horn ◽  
Robert T. Patton
Keyword(s):  
Los Angeles ◽  
Gulf Of California ◽  
Southern California ◽  
The United States ◽  
Island Region ◽  
Sea Surface Temperature Anomalies ◽  
Sardine Population ◽  
Year 2000 ◽  
Strong Inverse Relationship ◽  
Oceanographic Conditions

Parallel studies of nesting colonies in Mexico and the United States show that Elegant Terns (Thalasseus elegans) have expanded from the Gulf of California Midriff Island Region into Southern California, but the expansion fluctuates from year to year. A strong inverse relationship between nesting pairs in three Southern California nesting areas [San Diego saltworks, Bolsa Chica Ecological Reserve, and Los Angeles Harbor (1991 to 2014)] and Isla Rasa in the Midriff (1980 to 2014) shows that terns migrate northward when confronting warm oceanographic anomalies (>1.0°C), which may decrease fish availability and hamper nesting success. Migration pulses are triggered by sea surface temperature anomalies localized in the Midriff and, secondarily, by reductions in the sardine population as a result of intensive fishing. This behavior is new; before year 2000, the terns stayed in the Midriff even when oceanographic conditions were adverse. Our results show that terns are responding dynamically to rapidly changing oceanographic conditions and fish availability by migrating 600 km northwest in search of more productive waters.

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