El Niño 1997-98 and the hydrometeorological variability of Chapala, a shallow tropical lake in Mexico

Abstract

The authors examine laypersons' perspectives of illness: the content of causal explanations of diabetes and differences in explanations according to gender. Qualitative research was carried out in Guadalajara, Mexico. A nonprobabilistic sample of 20 diabetic individuals participated in interviews, and the content of the interviews was analyzed. On the origin of their condition, participants offered explanations that match neither the biomedical model nor any other formal causal theory. Participants attributed the onset of diabetes to socioemotional circumstances linked to their life experiences and practices. Men attributed causality to work and social circumstances outside the home; women attributed it to family life and domestic circumstances. The authors discuss how lay theories can be useful for the reorganization of health services. " 2002 Sage Publications.",,,,,,,,,"http://hdl.handle.net/20.500.12104/40612","http://www.scopus.com/inward/record.url?eid=2-s2.0-0036631715&partnerID=40&md5=a96c0ddbb9583973e714c608693f5454",,,,,,"6",,"Qualitative Health Research",,"792

806",,"12",,"Scopus

WOS",,,,,,,,,,,,"Diabetes: The Layperson's theories of causality",,"Article" "42963","123456789/35008",,"Tereshchenko, I., Department of Physics, University of Guadalajara, Apdo. Postal 4-040, Guadalajara 44421, Jal., Mexico; Filonov, A., Department of Physics, University of Guadalajara, Apdo. Postal 4-040, Guadalajara 44421, Jal., Mexico; Gallegos, A., Instituto De Ciencias del Mar Y Limnologia, UNAM, Mexico, Mexico; Monzón, C., Department of Physics, University of Guadalajara, Apdo. Postal 4-040, Guadalajara 44421, Jal., Mexico; Rodríguez, R., Instituto De Ciencias del Mar Y Limnologia, UNAM, Mexico, Mexico",,"Tereshchenko, I.

Filonov, A.

Gallegos, A.

Monzon, C.

Rodriguez, R.",,"2002",,"One hundred years chronological water level fluctuations for Chapala Lake, a shallow tropical lake in west Mexico, as well as their relationships with air temperature fluctuations, precipitation and Lerma River discharge are examined in this study. It is shown, that these relationships were strongly revealed in the last 1997-98 El Niño, which caused anomalous air temperature and evaporation increase throughout Western Mexico territory and, as a consequence, 1 m downturn of the Chapala lake level since January till June, 1998. To investigate 1997-1998 El Niño-Southern Oscillation phenomenon (ENSO 1997-98) AVHRR-NOAA satellite image analysis of the Chapala Lake surface water temperature (LCST) was performed. These images provide a temperature database for 1996-99 (38 months). Analysis of annual and seasonal LCST fluctuations was carried out using monthly averages for this period. Time series analysis on the LCST data suggest that seasonal surface temperature variations may be almost completely obscured by the annual harmonic. In 1998 the temperature pattern was altered due to the El Niño 1997-98 episode. In winter the water surface temperature was on average almost 1°C lower than the temperature values registered in 1996. However, for the summer and autumn of 1998, such temperatures were 1.5 higher in comparison with the reference year of 1996. " 2002 Elsevier Science B.V. All rights reserved.