Tree growth responses and resilience after the 1950-Zayu-Medog earthquake, southeast Tibetan Plateau

Fu, Ting; Liang, Eryuan; Lu, Xiaoming; Gao, Shan; Zhang, Lin; Zhu, Haifeng; Rossi, Sergio; Camarero, J. Julio

doi:10.1016/j.dendro.2020.125724

Cited by 15 publications

(17 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Altogether, our data provide evidence for enhanced and reduced evapotranspiration on the valley bottom and ridge areas, respectively, likely caused by earthquake-triggered changes in soil-water availability. At a first glance, this finding is counter-intuitive as it suggests possible positive effects of earthquakes on tree growth as opposed to the many reports of negative effects (Fu et al, 2020;Lin & Lin, 1998;Meisling & Sieh, 1980). The contrasting responses on valley floors and ridges are more consistent with observations by Bekker et al (2018), who found that tree rings were broader in a riparian zone compared to higher areas, likely driven by a rise in groundwater after the M6.9 1983 Borah Peak earthquake, Idaho.…”

mentioning

confidence: 52%

“…Trees are abundant and may thus better constrain earthquake magnitude and location (Jacoby, 1997), and tree rings offer a yearly resolution that is more accurate than most geochronological tools (Jacoby et al, 1988;Sheppard & Jacoby, 1989). Indeed, most studies that searched for earthquake signals in trees analyzed the width of annual growth rings (Fu et al, 2020), though without considering possible effects of earthquake hydrology. Two common effects are falling groundwater levels along ridges or increased stream discharge (Rojstaczer et al, 1995;Wang et al, 2004) and can persist for weeks to months and modify regional water balances Mohr et al, 2017).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Trees talk tremor - Wood anatomy and δ13C content reveal contrasting tree-growth responses to earthquakes

Mohr

Manga

Helle

et al. 2021

Preprint

View full text Add to dashboard Cite

Large prehistoric earthquakes are preserved in the geological record. Paleoseismology is the discipline concerned with reconstructing past earthquakes from this record, and mainly draws on offsets in fault scarps and river channels, deformed sediments, soil liquefaction, landslide and tsunami deposits (Ludwig, 2015), and archeological records (Nur, 2007). Biological archives recognize that the sudden subsidence of coasts during earthquakes may submerge and kill near-shore vegetation (Atwater & Yamaguchi, 1991), while shaking-induced damage to roots and damage from debris may suppress tree growth and be recorded in annual growth rings (

show abstract

mentioning

confidence: 52%

mentioning

confidence: 99%

Trees talk tremor - Wood anatomy and δ13C content reveal contrasting tree-growth responses to earthquakes

Mohr

Manga

Helle

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Wells and Yetton (2004) studied the 1929 Buller and 1968 Inangahua earthquakes in New Zealand, finding clear impacts on tree growth, where swamps on elevated terraces are generally best for preserving earthquake records because they are not affected by drought or wind. As for tree growth disturbances due to earthquake shaking, Fu et al (2020) showed how the 1950 Zayu-Medog magnitude 8.6 earthquake in the southeastern Tibetan Plateau influenced tree growth during the period 1950-1955. However, alpine trees were less disturbed than those located at middle and low elevations.…”

Section: Earthquake-induced Ring Growth Disturbancementioning

confidence: 99%

Assessing local impacts of the 1700 CE Cascadia earthquake and tsunami using tree-ring growth histories: a case study in South Beach, Oregon, USA

Dziak

Black

Wei

et al. 2021

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. We present an investigation of the disturbance history of an old-growth Douglas-fir (Pseudotsuga menziesii) stand in South Beach, Oregon, for possible growth changes due to tsunami inundation caused by the 1700 CE Cascadia Subduction Zone (CSZ) earthquake. A high-resolution model of the 1700 tsunami run-up heights at South Beach, assuming an “L”-sized earthquake, is also presented to better estimate the inundation levels several kilometers inland at the old-growth site. This tsunami model indicates the South Beach fir stand would have been subjected to local inundation depths from 0 to 10 m. Growth chronologies collected from the Douglas-fir stand shows that trees experienced a significant growth reductions in the year 1700 relative to nearby Douglas-fir stands, consistent with the tsunami inundation estimates. The ±1–3-year timing of the South Beach disturbances are also consistent with disturbances previously observed at a Washington state coastal forest ∼220 km to the north. Moreover, the 1700 South Beach growth reductions were not the largest over the >321-year tree chronology at this location, with other disturbances likely caused by climate drivers (e.g., drought or windstorms). Our study represents a first step in using tree growth history to ground truth tsunami inundation models by providing site-specific physical evidence.

show abstract

“…In Northeast, a large intraplate domain, where the Indian plate interact a N-S converge with Eurasian plate along the Himalayan arc (Brunnschweiler, 1974;Holt et al1991) and an E-W plate converge with Sunda plate with an eastward active subduction of the Indian plate beneath the Burma Plate (Khin et al2022), making the most unstable portion in the world by means of earthquakes (Angelier and Baruah, 2009). The earthquake cataloging in the Northeastern region started in the tenth century onwards; in which the largest continental, the great Assam earthquake (1950 Mw= 8.6), also known as Zayu-Medog earthquake (Fu et al 2020), was the first well documented by instrument in the human history (Ben-Menahemet al 1974;Chen and Molnar 1977;Iyengar et al1999;Rajendran et al 2004;Coudurier-Curveur, 2020). Studies on 1897 Shillong earthquake (Sukhija et al, 1999a) and 1950earthquake studies in the upper Assam (Thomas et al 2007;Reddy et al 2009;Priyanka et al 2017, Kumar et al 2010and Kumar et al 2016) reveal multiple episodes of earthquake and liquefaction effects.…”

Section: Introductionmentioning

confidence: 99%

Holocene Records of Large Palaeoearthquake events from the Brahmaputra valley in the proximity of the Eastern Himalayan Syntaxis and Environmental Impacts

Bhadran

Duarah

Girishbai

et al. 2022

Preprint

View full text Add to dashboard Cite

The Eastern Himalayan Syntaxis (EHS) and associated tectonic plate boundaries have caused two great earthquakes within hundred years and more than fifteen strong earthquakes (from eighteen centuries) in the foredeep Brahmaputra Basin. These earthquakes are generally considered blind, owing to the deficiency of surface rupture. Further, the lack of instrumental and historical archives elicits palaeo-seismological proxies for future seismic hazard assessment. The present study area is confined to the rapidly growing Dibrugarh City, lies on left bank of Brahmaputra and bounded by EHS in northeast, Main Frontal Thrust (MFT) in North, Naga Thrust (NT) in Southeast and Mishmi Thrust (MT) in east. This tectonically active area witnessed dreadful damages during the 1950 great Assam earthquake (Mw = 8.4), the largest continental ever recorded event. In this study, palaeoseismological evidence such as sand dyke and sand blow from different levels of the river terraces in and around Dibrugarh City has been dated using optically stimulated luminescence (OSL) methodology to understand the ages of the causative event. The optical dates from the palaeoliquefacton features indicate multiple episodic events ca. 888 ± 63 yrs, ca. 934 ± 63 yrs & ca. 989 ± 83 yrs. On the other hand, an age of ca. 11.3 ± 0.7 ka, early Holocene has been obtained from a neotectonic scarp indicates the crustal shortening time during MFT orogeny. Further, the empirical back-calculation of the complex geometry of the palaeoliquefaction feature facilitated in determining the causative earthquake magnitude and PGA, which is first of its kind from northeast of India. Back-calculation indicates, the magnitude of the earthquake might be range from 6.2-7.4Mw with PGA ~ 0.5-0.6g. The overlapping of palaeointensity lines /isoseismic lines from the empirical calculation, ESI and 1950 earthquake indicate the effect of multiple episodes of earthquake and vulnerability in Eastern Himalayan foothill areas. This study is of immense importance considering the seismic hazard potential in the eastern Himalaya and its surroundings and inadequate instrumentally recorded earthquake database.

show abstract

Tree growth responses and resilience after the 1950-Zayu-Medog earthquake, southeast Tibetan Plateau

Cited by 15 publications

References 34 publications

Trees talk tremor - Wood anatomy and δ13C content reveal contrasting tree-growth responses to earthquakes

Trees talk tremor - Wood anatomy and δ13C content reveal contrasting tree-growth responses to earthquakes

Assessing local impacts of the 1700 CE Cascadia earthquake and tsunami using tree-ring growth histories: a case study in South Beach, Oregon, USA

Holocene Records of Large Palaeoearthquake events from the Brahmaputra valley in the proximity of the Eastern Himalayan Syntaxis and Environmental Impacts

Contact Info

Product

Resources

About