Showing papers by "San Diego State University published in 2001"

FLUXNET: A New Tool to Study the Temporal and Spatial Variability of Ecosystem-Scale Carbon Dioxide, Water Vapor, and Energy Flux Densities

Abstract: FLUXNET is a global network of micrometeorological flux measurement sites that measure the exchanges of carbon dioxide, water vapor, and energy between the biosphere and atmosphere. At present over 140 sites are operating on a long-term and continuous basis. Vegetation under study includes temperate conifer and broadleaved (deciduous and evergreen) forests, tropical and boreal forests, crops, grasslands, chaparral, wetlands, and tundra. Sites exist on five continents and their latitudinal distribution ranges from 70°N to 30°S. FLUXNET has several primary functions. First, it provides infrastructure for compiling, archiving, and distributing carbon, water, and energy flux measurement, and meteorological, plant, and soil data to the science community. (Data and site information are available online at the FLUXNET Web site, http://www-eosdis.ornl.gov/FLUXNET/.) Second, the project supports calibration and flux intercomparison activities. This activity ensures that data from the regional networks are intercomparable. And third, FLUXNET supports the synthesis, discussion, and communication of ideas and data by supporting project scientists, workshops, and visiting scientists. The overarching goal is to provide information for validating computations of net primary productivity, evaporation, and energy absorption that are being generated by sensors mounted on the NASA Terra satellite. Data being compiled by FLUXNET are being used to quantify and compare magnitudes and dynamics of annual ecosystem carbon and water balances, to quantify the response of stand-scale carbon dioxide and water vapor flux densities to controlling biotic and abiotic factors, and to validate a hierarchy of soil–plant–atmosphere trace gas exchange models. Findings so far include 1) net CO 2 exchange of temperate broadleaved forests increases by about 5.7 g C m −2 day −1 for each additional day that the growing season is extended; 2) the sensitivity of net ecosystem CO 2 exchange to sunlight doubles if the sky is cloudy rather than clear; 3) the spectrum of CO 2 flux density exhibits peaks at timescales of days, weeks, and years, and a spectral gap exists at the month timescale; 4) the optimal temperature of net CO 2 exchange varies with mean summer temperature; and 5) stand age affects carbon dioxide and water vapor flux densities.

Low-Speed Aerodynamics

Abstract: Low-speed aerodynamics is important in the design and operation of aircraft flying at low Mach number, and ground and marine vehicles. This 2001 book offers a modern treatment of the subject, both the theory of inviscid, incompressible, and irrotational aerodynamics and the computational techniques now available to solve complex problems. A unique feature of the text is that the computational approach (from a single vortex element to a three-dimensional panel formulation) is interwoven throughout. Thus, the reader can learn about classical methods of the past, while also learning how to use numerical methods to solve real-world aerodynamic problems. This second edition has a new chapter on the laminar boundary layer (emphasis on the viscous-inviscid coupling), the latest versions of computational techniques, and additional coverage of interaction problems. It includes a systematic treatment of two-dimensional panel methods and a detailed presentation of computational techniques for three-dimensional and unsteady flows. With extensive illustrations and examples, this book will be useful for senior and beginning graduate-level courses, as well as a helpful reference tool for practising engineers.

If You Can't Join Them, Beat Them: Effects of Social Exclusion on Aggressive Behavior

Abstract: Social exclusion was manipulated by telling people that they would end up alone later in life or that other participants had rejected them. These manipulations caused participants to behave more aggressively. Excluded people issued a more negative job evaluation against someone who insulted them (Experiments 1 and 2). Excluded people also blasted a target with higher levels of aversive noise both when the target had insulted them (Experiment 4) and when the target was a neutral person and no interaction had occurred (Experiment 5). However, excluded people were not more aggressive toward someone who issued praise (Experiment 3). These responses were specific to social exclusion (as opposed to other misfortunes) and were not mediated by emotion.

A Physical Activity Screening Measure for Use With Adolescents in Primary Care

Abstract: Objective: To develop a reliable and valid physical activity screening measure for use with adolescents in primary care settings. Study Designs We conducted 2 studies to evaluate the test-retest reliability and concurrent validity of 6 single-item and 3 composite measures of physical activity. Modifications were based on the findings of the 2 studies, and a best measure was evaluated in study 3. Accelerometer data served as the criterion standard for tests of validity. Results: In study 1 (N=250; mean age, 15 years; 56% female; 36% white), reports on the composite measures were most reliable. In study 2 (N = 57; mean age, 14 years; 65% female; 37% white), 6 of the 9 screening measures correlated significantly with accelerometer data. Subjects, however, had great difficulty reporting bouts of activity and distinguishing between intensity levels. Instead, we developed a single measure assessing accumulation of 60 minutes of moderate to vigorous physical activity. Evaluated in study 3 (N=148; mean age, 12 years; 65% female; 27% white), the measure was reliable (intraclass correlation, 0.77) and correlated significantly (r=0.40, P<.001) with accelerometer data. Correct classification (63%), sensitivity (71%), and false-positive rates (40%) were reasonable. Conclusion: The moderate to vigorous physical activity screening measure is recommended for clinical practice with adolescents.

Homocysteine-induced endoplasmic reticulum stress causes dysregulation of the cholesterol and triglyceride biosynthetic pathways

Abstract: Hepatic steatosis is common in patients having severe hyperhomocysteinemia due to deficiency for cystathionine beta-synthase. However, the mechanism by which homocysteine promotes the development and progression of hepatic steatosis is unknown. We report here that homocysteine-induced endoplasmic reticulum (ER) stress activates both the unfolded protein response and the sterol regulatory element-binding proteins (SREBPs) in cultured human hepatocytes as well as vascular endothelial and aortic smooth muscle cells. Activation of the SREBPs is associated with increased expression of genes responsible for cholesterol/triglyceride biosynthesis and uptake and with intracellular accumulation of cholesterol. Homocysteine-induced gene expression was inhibited by overexpression of the ER chaperone, GRP78/BiP, thus demonstrating a direct role of ER stress in the activation of cholesterol/triglyceride biosynthesis. Consistent with these in vitro findings, cholesterol and triglycerides were significantly elevated in the livers, but not plasmas, of mice having diet-induced hyperhomocysteinemia. This effect was not due to impaired hepatic export of lipids because secretion of VLDL-triglyceride was increased in hyperhomocysteinemic mice. These findings suggest a mechanism by which homocysteine-induced ER stress causes dysregulation of the endogenous sterol response pathway, leading to increased hepatic biosynthesis and uptake of cholesterol and triglycerides. Furthermore, this mechanism likely explains the development and progression of hepatic steatosis and possibly atherosclerotic lesions observed in hyperhomocysteinemia.

The childhood trauma questionnaire in a community sample: psychometric properties and normative data.

Abstract: Interpretation of research on the prevalence and sequelae of childhood trauma has been hindered by the use of assessment instruments with unknown psychometric properties. Thus, we examined the psychometric properties of a new childhood trauma measure, the Childhood Trauma Questionnaire (CTQ). The CTQ has demonstrated strong psychometric properties in clinical samples; limited information exists on its psychometric properties in community samples. Therefore, we explored the factor structure and reliability of the CTQ in a community sample and calculated normative data. Consistent with previous literature, a 5-factor model best described the CTQ, with a hierarchical model also providing excellent fit. Additionally, the CTQ demonstrated acceptable internal consistency. Overall, our findings suggest that the CTQ is appropriate for use in a community sample.

Transformational and Transactional Leadership and Their Effects on Creativity in Groups

Abstract: This study used a 2 (transformational vs. transactional leadership) × 2 (real vs. nominal group) experiment to examine the effect of different leadership styles and brainstorming conditions on group members' divergent thinking. Participants performed a brainstorming task, and their performance was assessed using fluency and flexibility. Results clearly supported the hypotheses in that the participants in the transformational leadership condition and in the nominal group condition outperformed their counterparts in the transactional leadership condition and in the real group condition. This pattern was consistent across the 2 measures of creativity.

The association of school environments with youth physical activity.

Abstract: Objectives. This study assessed the association of school environmental characteristics with student physical activity on campus. Methods. Physical activity areas (n= 137) at 24 public middle schools were assessed for area type, size, and improvements (e.g., basketball courts). Student physical activity and the presence of equipment and supervision were directly observed before school, after lunch, and after school. Results. Environmental characteristics explained 42% of the variance in the proportion of girls who were physically active and 59% of the variance for boys. Conclusions. School environments with high levels of supervision and improvements stimulated girls and boys to be more physically active. (Am J Public Health. 2001;91:618‐620)

Neuropsychiatric aspects of Huntington's disease

Abstract: OBJECTIVE Neuropsychiatric symptoms are common in Huntington9s disease and have been considered its presenting manifestation. Research characterising these symptoms in Huntington9s disease is variable, however, encumbered by limitations within and across studies. Gaining a better understanding of neuropsychiatric symptoms is essential, as these symptoms have implications for disease management, prognosis, and quality of life for patients and caregivers. METHOD Fifty two patients with Huntington9s disease were administered standardised measures of cognition, psychiatric symptoms, and motor abnormalities. Patient caregivers were administered the neuropsychiatric inventory. RESULTS Ninety eight per cent of the patients exhibited neuropsychiatric symptoms, the most prevalent being dysphoria, agitation, irritability, apathy, and anxiety. Symptoms ranged from mild to severe and were unrelated to dementia and chorea. CONCLUSIONS Neuropsychiatric symptoms are prevalent in Huntington9s disease and are relatively independent of cognitive and motor aspects of the disease. Hypothesised links between neuropsychiatric symptoms of Huntington9s disease and frontal-striatal circuitry were explored. Findings indicate that dimensional measures of neuropsychiatric symptoms are essential to capture the full range of pathology in Huntington9s disease and are vital to include in a comprehensive assessment of the disease.

Age and Birth Cohort Differences in Self-Esteem: A Cross-Temporal Meta-Analysis

Abstract: A meta-analytic review finds that college students' self-esteem increased substantially between 1968 and 1994 when measured using the Rosenberg Self-Esteem Scale (RSE). Children's scores on the Coopersmith Self-Esteem Inventory (SEI) show a curvilinear pattern over time, decreasing from 1965 to 1979 and increasing from 1980 to 1993. Children's SEI scores are directly correlated with social statistics (e.g., divorce rate, unemployment) for the corresponding years. Analyses for age differences find that SEI scores decrease slightly during the transition from elementary school to junior high and then rise progressively through high school and college. RSE scores increase steadily with age. Results are discussed in terms of the antecedents of self-esteem, including social acceptance, competencies, and the culture of self-worth.

Behavioral science research in diabetes: lifestyle changes related to obesity, eating behavior, and physical activity.

Abstract: Lifestyle factors related to obesity, eating behavior, and physical activity play a major role in the prevention and treatment of type 2 diabetes. In recent years, there has been progress in the development of behavioral strategies to modify these lifestyle behaviors. Further research, however, is clearly needed, because the rates of obesity in our country are escalating, and changing behavior for the long term has proven to be very difficult. This review article, which grew out of a National Institute of Diabetes and Digestive and Kidney Diseases conference on behavioral science research in diabetes, identifies four key topics related to obesity and physical activity that should be given high priority in future research efforts: 1) environmental factors related to obesity, eating, and physical activity; 2) adoption and maintenance of healthful eating, physical activity, and weight; 3) etiology of eating and physical activity; and 4) multiple behavior changes. This review article discusses the significance of each of these four topics, briefly reviews prior research in each area, identifies barriers to progress, and makes specific research recommendations.

Brain dysmorphology in individuals with severe prenatal alcohol exposure.

Abstract: Our previous studies revealed abnormalities on structural MRI (sMRI) in small groups of children exposed to alcohol prenatally. Microcephaly, disproportionately reduced basal ganglia volume, and abnormalities of the cerebellar vermis and corpus callosum were demonstrated. The present study used sMRI to examine in detail the regional pattern of brain hypoplasia resulting from prenatal exposure to alcohol using a higher resolution imaging protocol and larger sample sizes than reported previously. Fourteen participants (mean 11.4 years; eight females, six males) with fetal alcohol syndrome (FAS) and 12 participants (mean 14.8 years; four females, eight males) with prenatal exposure to alcohol (PEA) but without the facial features of FAS were compared to a group of 41 control participants (mean 12.8 years, 20 females, 21 males). Findings of significant microcephaly and disproportionately reduced basal ganglia volumes in the FAS group were confirmed. Novel findings were that in FAS participants, white matter volumes were more affected than gray matter volumes in the cerebrum, and parietal lobes were more affected than temporal and occipital lobes. Among subcortical structures, in contrast to the disproportionate effects on caudate nucleus, the hippocampus was relatively preserved in FAS participants. Differences between the PEA group and controls were generally non-significant; however, among a few of the structures most affected in FAS participants, there was some evidence for volume reduction in PEA participants as well, specifically in basal ganglia and the parietal lobe. There were no group differences in cerebral volume asymmetries. Severe prenatal alcohol exposure appears to produce a specific pattern of brain hypoplasia.

Mechanisms of carcinogenesis: focus on oxidative stress and electron transfer.

Abstract: For more than half a century, numerous proposals have been advanced for the mode of action of carcinogens. This review presents a wide array of evidence that implicates oxidative stress (OS) in many aspects of oncology, including: formation of reactive oxygen species (ROS) by the major classes of carcinogens (as well as minor ones), cancer stages, oncogene activation, aging, genetic and infectious illnesses, nutrition, and the role of antioxidants (AOs). Although diverse origins pertain, including both endogenous and exogenous agents, ROS are frequently generated by redox cycling via electron transfer (ET) groups, e.g., quinones (or phenolic precursors), metal complexes (or complexors), aromatic nitro compounds (or reduced products), and conjugated imines (or iminium species). We believe it is not coincidental that these functionalities are often found in carcinogens or their metabolites. The pervasive aspects of DNA binding by ultimate carcinogens, and mutations caused by ROS are treated. Often, ROS are implicated in more conventional rationales, such as oncogenes. A multi-faceted approach to mechanisms appears to be the most logical. The OS unifying theme represents an approach which is able to rationalize the diverse data associated with carcinogenesis. Because this theoretical framework aids in the understanding of cancer initiation, it can serve as a useful tool in combating cancer, particularly in relation to prevention. Significantly, the electron transfer--oxidative stress (ET-OS) scenario can also be applied to many drug categories, toxins, enzymes, and hormones.

Changes in women's assertiveness in response to status and roles: a cross-temporal meta-analysis, 1931-1993.

Abstract: Across two meta-analyses, American women's assertiveness rose and fell with their social status from 1931 to 1993. College women and high school girls' self-reports on assertiveness and dominance scales increased from 1931 to 1945, decreased from 1946 to 1967, and increased from 1968 to 1993, explaining about 14% of the variance in the trait. Women's scores have increased enough that many recent samples show no sex differences in assertiveness. Correlations with social indicators (e.g., women's educational attainment, women's median age at first marriage) confirm that women's assertiveness varies with their status and roles. Social change is thus internalized in the form of a personality trait. Men's scores do not demonstrate a significant birth cohort effect overall. The results suggest that the changing sociocultural environment for women affected their personalities, most likely beginning in childhood.

Teratogenic effects of alcohol on brain and behavior

Abstract: Children prenatally exposed to alcohol can suffer from serious cognitive deficits and behavioral problems as well as from alcohol-related changes in brain structure. Neuropsychological studies have identified deficits in learning and memory as well as in executive functioning both in children with fetal alcohol syndrome and in children with less severe impairments. Both groups of children also exhibit problem behaviors, such as alcohol and drug use, hyperactivity, impulsivity, and poor socialization and communication skills. Brain imaging studies have identified structural changes in various brain regions of these children--including the basal ganglia, corpus callosum, cerebellum, and hippocampus--that may account for the cognitive deficits. Functional brain imaging studies also have detected changes in alcohol-exposed children indicative of deficits in information processing and memory tasks.

Post-Traumatic Stress Disorder (PTSD) in Victims of Domestic Violence A Review of the Research

Abstract: The objectives of this research were to analyze data from literature based on studies of battered women to determine (a) the correlation of domestic violence and post-traumatic stress disorder (PTSD), (b) the best treatment strategies for PTSD, and (c) the evidence of PTSD treatment effectiveness with battered women. Findings were (a) symptoms of battered women are consistent with PTSD symptoms; (b) certain populations are at higher risk of developing PTSD symptoms; (c) intensity, duration, and perception of the battering experience is a significant factor in the severity of the PTSD symptoms; (d) demographic variables influence PTSD severity; (e) standardized PTSD assessment is needed by professionals working with women experiencing domestic violence; (f) there is a need for greater public health involvement for prevention, identification, and medical treatment of domestic violence and PTSD; and (g) certain treatment strategies are recommended for PTSD but lack rigorous testing of their efficacy.

The Role of Discrimination and Acculturative Stress in the Physical Health of Mexican-Origin Adults

Abstract: The authors propose that perceived discrimination has an effect on self-reported health statuses, which are known to affect future morbidity and mortality. A sample of 3,012 Mexican-origin adults from the Mexican American Prevalence and Services Study in California is utilized to test this hypothesis. Dependent variables include a self-rating of health and a count of self-reported chronic conditions; the key independent variable is a scale of overall discrimination specific to one’s Mexican origin. Results indicate that discrimination is related to poor physical health—net of controls for acculturation stress, national heritage, sociodemographic variables, and social support. Depression is identified as a major mechanism through which discrimination may affect physical health. Notably, job market stress/discrimination has a very strong association with poorer physical health, net of depression. Individual-level effects of discrimination found in this study, as well as institutional-level conditions and co...

Testing for Local Spatial Autocorrelation in the Presence of Global Autocorrelation

Abstract: A fundamental concern of spatial analysts is to find patterns in spatial data that lead to the identification of spatial autocorrelation or association. Further, they seek to identify peculiarities in the data set that signify that something out of the ordinary has occurred in one or more regions. In this paper we provide a statistic that tests for local spatial autocorrelation in the presence of the global autocorrelation that is characteristic of heterogeneous spatial data. After identifying the structure of global autocorrelation, we introduce a new measure that may be used to test for local structure. This new statistic Oi is asymptotically normally distributed and allows for straightforward tests of hypothe- ses. We provide several numerical examples that illustrate the performance of this statistic and compare it with another measure that does not account for global structure.

The Effect Of Individual Perceptions of Deadlines on Team Performance

Abstract: Based on a review of existing literature, we propose that two time-oriented individual differences—time urgency and time perspective—influence team members' perceptions of deadlines. We present propositions describing how time urgency and time perspective affect individuals' deadline perceptions and subsequent deadline-oriented behaviors and how different deadline perceptions and behaviors among team members affect the ability of teams to meet deadlines. We end with implications for existing theory and future research.

Linear Preserver Problems

Abstract: Linear preserver problems is an active research area in matrix and operator theory. These problems involve certain linear operators on spaces of matrices or operators. We give a general introduction to the subject in this article. In the first three sections, we discuss motivation, results, and problems. In the last three sections, we describe some techniques, outline a few proofs, and discuss some exceptional results. 1. EXAMPLES AND TYPICAL PROBLEMS. Let Mm,n be the set of m × n complex matrices, and let Mn = Mn,n. Suppose that M, N ∈ Mn satisfy det( MN ) = 1. Then the mapping φ : Mn → Mn given by

Attention function and dysfunction in autism.

Abstract: Impairments of attention are among the most consistently reported cognitive deficits in autism, and they continue to be a key focus of research. This is in no doubt due to the importance of normal attention function to the development of many so-called "higher level" cognitive operations, and to the likely involvement of attention dysfunction in certain clinical features of autism. Autistic individuals display a wide range of attentional abilities and deficits across the many domains of attention function, including selective, sustained, spatial, and shifting attention operations. This unique pattern of attention function and dysfunction has profound implications for the development and treatment of autistic children. The present review will explore this pattern of attentional strengths and weaknesses and the neural defects that underlie them.

Reduced genetic diversity in eelgrass transplantations affects both population growth and individual fitness

Abstract: The transplantation of eelgrass (Zostera marina) for mitigation results in reduced genetic diversity among individuals and populations- in southern California, the Chesapeake Bay, and New Hampshire. Although genetic variation determines the potential for eelgrass to adapt to the rapidly changing environment in its coastal and estuarine habitats, genetic considerations are not currently included in mitigation and restoration policy. I investigated where and how genetic diversity is lost during eelgrass transplantation. I then explored associations between genetic diversity and both vegetative propagation and sexual reproduction to evaluate the importance of genetic diversity for short-term population growth. Eelgrass beds used as donor populations vary in genetic diversity, and some have little or no detectable genetic diversity. Genetic diversity is reduced upon transplantation because donor plants are collected from small areas, leading to random sampling errors in selecting stock. This loss can be minimized by using information from regional surveys of genetic diversity and structure in potential donor populations and by revising donor stock collection. There were significant positive associations between genetic diversity and the sexual reproduction of eelgrass, with a similar trend for vegetative propagation. Individuals het- erozygous for glucose-phosphate isomerase (GPI) developed flowering shoots more than did homozygotes. More seeds germinated from a genetically diverse, untransplanted pop- ulation than from a transplanted population with low genetic diversity. A field transplan- tation of known multilocus genotypes revealed that leaf shoot density in high-diversity eelgrass increased almost twice as fast as in low-diversity eelgrass over 22 mo. In a me- socosm experiment under heat stress, eelgrass heterozygous for either GPI or malate de- hydrogenase (MDH) produced almost twice as many leaf shoots as homozygotes. The difference between treatments in all experiments increased over time. Together, these results imply that there could be economic incentives to planting genetically diverse eelgrass, and that genetic diversity contributes to eelgrass population viability even over the short term.

Children Who Return Home From Foster Care: A 6-Year Prospective Study of Behavioral Health Outcomes in Adolescence

Abstract: Objective. Returning children to their biological families after placement in foster care (ie, reunification) has been prioritized with legislation. Comprehensive studies of child behavioral health functioning after reunification, however, have not been conducted. This study examined outcomes for youth who were reunified after placement in foster care as compared with youth who did not reunify. Design. Prospective cohort. Setting. Children who entered foster care in San Diego, California, and who remained in foster care for at least 5 months. Participants. A cohort of 149 ethnically diverse youth, 7 to 12 years old, who entered foster care between May 1990, and October 1991. Seventy-five percent of those interviewed at Time 1 were interviewed at Time 2 (6 years later). Outcome Measures. 1) Risk behaviors: delinquent, sexual, self-destructive, substance use, and total risk behaviors; 2) Life-course outcomes: pregnancy, tickets/arrests, suspensions, dropping out of school, and grades; 3) Current symptomatology: externalizing, internalizing, total behavior problems, and total competence. Results. Compared with youth who were not reunified, reunified youth showed more self-destructive behavior (0.15 vs −0.11), substance use (0.16 vs −0.11), and total risk behavior problem standardized scores (0.12 vs −0.09). Reunified youth were more likely to have received a ticket or have been arrested (49.2% vs 30.2%), to have dropped out of school (20.6% vs 9.4%), and to have received lower grades (6.5 vs 7.4). Reunified youth reported more current problems in internalizing behaviors (56.6 vs 53.0), and total behavior problems (59.5 vs 55.7), and lower total competence (41.1 vs 45.0). There were no statistically significant differences between the groups on delinquency, sexual behaviors, pregnancy, suspensions, or externalizing behaviors. Reunification status was a significant predictor of negative outcomes in 8 of the 9 regression equations after controlling for Time 1 behavior problems, age, and gender. Conclusions. These findings suggest that youth who reunify with their biological families after placement in foster care have more negative outcomes than youth who do not reunify. The implications of these findings for policy and practice are discussed.

Deep molecular divergence in the absence of morphological and ecological change in the Californian coastal dune endemic trapdoor spider Aptostichus simus

Abstract: Aptostichus simus is a trapdoor spider endemic to the coastal dunes of central and southern California and, on morphological grounds, is recognized as a single species. Mitochondrial DNA 16S rRNA sequences demonstrate that most populations are fixed for the same haplotype and that the population haplotypes from San Diego County, Los Angeles County, Santa Rosa Island, and Monterey County are extremely divergent (6 ‐12%), with estimated separation times ranging from 2 to 6 million years. A statistical cluster analysis of morphological features demonstrates that this genetic divergence is not reflected in anatomical features that might signify ecological differentiation among these lineages. The species status of these divergent populations of A. simus depends upon the species concept utilized. If a time-limited genealogical perspective is employed, A. simus would be separated at the base into two genetically distinct species. This study suggests that species concepts based on morphological distinctiveness, in spider groups with limited dispersal capabilities, probably underestimate true evolutionary diversity.

Earthquake recurrence and rupture dynamics of Himalayan Frontal Thrust, India.

Abstract: The Black Mango fault is a structural discontinuity that transforms motion between two segments of the active Himalayan Frontal Thrust (HFT) in northwestern India. The Black Mango fault displays evidence of two large surface rupture earthquakes during the past 650 years, subsequent to 1294 A.D. and 1423 A.D., and possibly another rupture at about 260 A.D. Displacement during the last two earthquakes was at minimum 4.6 meters and 2.4 to 4.0 meters, respectively, and possibly larger for the 260 A.D. event. Abandoned terraces of the adjacent Markanda River record uplift due to slip on the underlying HFT of 4.8 +/- 0.9 millimeters per year or greater since the mid-Holocene. The uplift rate is equivalent to rates of fault slip and crustal shortening of 9.6(-3.5)(+7.0) millimeters per year and 8.4(-3.6)(+7.3) millimeters per year, respectively, when it is assumed that the HFT dips 30 degrees +/- 10 degrees.